Mathematical analysis and predictions for the 19th round of Segunda RFEF – Group 5 (Season 2025-2026): Algorithmic model for risk and stability assessment

Description

Mathematical analysis and predictions for the 19th round of Segunda RFEF – Group 5 (Season 2025-2026): Algorithmic model for risk and stability assessment

Sports betting, when viewed through the lens of modern quantitative mathematics, ceases to be a game of chance and becomes a disciplined exercise in probability management. ¹ This comprehensive report is prepared by “Cara – Your Betting Guardian Angel ” and presents a detailed statistical review of the 19th round of the Spanish Segunda RFEF, Group 5. In a world dominated by emotional biases and subjective analysis, Cara applies a rigorous “MATHEMATICAL CALCULATION PROTOCOL” to provide the user with a mathematical shield against uncertainty. ¹

Group 5 of the Segunda RFEF for the 2025-2026 season is shaping up to be one of the most evenly matched and tactically intense divisions in the Spanish football pyramid. ² With a high draw rate and a heavily defensive style of play across most teams, identifying true value requires more than just looking at form. ³ Using the Harmony Index, this analysis goes beyond the surface of standard odds to reveal hidden relationships between attacking prowess, defensive stability and the overall predictability of each match. ¹

Mathematical architecture of the model: Master Template

To understand the logic of the proposed predictions, it is necessary to define the parameters of the computational model. Each match goes through eight consecutive computational phases that transform raw statistical data into an objective risk assessment. ¹

Phase 1: Quantitative basis

The first step involves extracting the main indicators for the home and away teams since the beginning of the championship. These are the percentages of wins ($W \% $), draws ($D\%$) and losses ($L\%$), as well as the average number of goals scored ($GF$) and goals conceded ($GA$) per match. ¹ These data serve as the foundation on which the entire subsequent structure is built.

Phase 2 and 3: Calculation of forces

Attacking strength is defined as the sum of the win-loss percentage (which reflects the team’s tendency to seek a draw-free solution) and the average number of goals scored 1:

$$Attack strength = W% + L% + GF _{ avg}$$Defensive strength, in turn, is the reciprocal of the win-loss balance, adjusted for the average goals scored 1:

$$Defense Strength = \ frac{ 1}{(W\% – L\% + GA_{avg})}$$

Phase 4 and 5: Expected goals and Poisson distribution

Expected goals ($xG$) for the upcoming match are calculated as the arithmetic mean between one team’s attacking power and the opponent’s defensive strength. ¹ These values are fed to a Poisson distribution, which generates the probabilities for the three possible outcomes (1, X, 2), rounded to whole percentages for maximum clarity. ¹

Phase 6, 7 and 8: Stability and Harmony Indices

Here, the model introduces a “Stability ” ( $K$), measuring the variation of probabilities by standard deviation, and an “Equality Index” ($L$), which measures the absolute difference in the balance of power.1 The final “Harmony Index” combines these two values to provide a security score:

$$Harmony Index = \frac{2}{K} + \frac{1}{1 – L }$ $

Values above 100 are classified as “Platinum Selection”, and those above 90 as “High Confidence”.1

Statistical landscape of Segunda RFEF Group 5 (Round 18)

Before the start of the 19th round, it is important to review the rankings, which serve as the main source of data for the model. ¹

Position	Team	Matches	Wins	Ties	Losses	GV	GP	Points
1	Rayo Majadahonda	18	11	5	2	25	10	38
2	San Sebastian Reyes	18	10	3	5	23	16	33
3	Getafe B	18	9	4	5	30	23	31
4	CD Coria	18	8	6	4	22	14	30
5	CF Intercity	18	7	7	4	27	21	28
6	Conquense	18	6	9	3	19	16	27
7	Orihuela	18	7	5	6	25	22	26
8	Navalcarnero	18	6	7	5	20	19	25
9	Rayo Vallecano B	17	8	1	8	20	27	25
10	Las Palmas B	18	7	3	8	23	21	24
11	Tenerife B	17	7	3	7	24	25	24
12	RSD Alcala	18	6	6	6	19	22	24
13	Fuenlabrada	18	6	5	7	22	20	23
14	Elche Ilicitano	18	4	8	6	26	29	20
15	Real Madrid C	18	4	5	9	21	24	17
16	Colonia Moscardo	18	4	4	10	19	36	16
17	Quintanar del Rey	18	4	4	10	15	20	16
18	We are so excited.	18	2	5	11	12	27	11

¹

The league is averaging around 3.00 goals per game according to the latest Group 5 data, which is unusually high for this level and suggests an opening up of play in the second half of the season. ² However, the high draw rate (40%) remains a critical factor for analysts. ³

Detailed analysis of the matches from the 19th round

1. Elche Ilicitano vs CD Colonia Moscardo

This bottom-of-the-table clash is a classic example of a high-stakes survival match. ⁴ Elche Ilicitano are in 14th place, while Colonia Moscardo are in 16th, just 4 points behind. ⁶

Mathematical profile:

• Ilicitano: $W\%: 22\%$, $D\%: 44\%$, $L\%: 34\%$, $GF _{ avg}: 1.44$, $GA_{avg}: 1.61$.
• Moscardo: $W\%: 22\%$, $D\%: 22\%$, $L\%: 56\%$, $GF _{ avg}: 1.06$, $GA_{avg}: 2.00$.

Force calculations:

Ilicitano’s attack power is $0.22 + 0.34 + 1.44 = 2.00$.1 Their defense power is $1 / (0.22 – 0.34 + 1.61) = 0.67$.1

For Moscardo, the attack is $0.22 + 0.56 + 1.06 = $1.84, and the defense is $1 / (0.22 – 0.56 + 2.00) = $0.60.1

Forecast and Harmony:

The expected goals are $xG _{ Home} = 1.30$ and $xG_{Away} = 1.26$.1 The Poisson distribution gives almost equal chances for 1 and 2 (36% each), with 28% for a draw.1 The stability ($K = 0.189$) and the evenness index ($L = 0.09$) lead to a Harmony Index of 11.68.

Verdict: Although the market odds favor the home team (1.76), the mathematical model points to an extremely close match with a high potential for a draw (X).1

2. Real Madrid C vs Orihuela

The match at the Madrid stadium pits the young talents of the “white ballet ” against the solid Orihuela team, which occupies 7th place. ¹

Mathematical profile:

• RM C: $W\%: 22\%$, $D\%: 28\%$, $L\%: 50\%$, $GF _{ avg}: 1.17$, $GA_{avg}: 1.33$.
• Orihuela: $W\%: 39\%$, $D\%: 28\%$, $L\%: 33\%$, $GF _{ avg}: 1.39$, $GA_{avg}: 1.22$.

Force calculations:

Real Madrid C’s attacking power is $1.89$, while their defense is relatively solid for their position ($0.95$). Orihuela shows a higher attacking power of $2.11$ and a defensive rating of $0.78$.1

Forecast and Harmony:

The $xG$ values are $1.34$ for the home team and $1.53$ for the away team, respectively.1 This gives a 43% probability of the away team winning. The Harmony Index is 6.65, reflecting the tactical volatility of the youth squads.1

Verdict: V3 value is $-0.12$, which according to the protocol is a signal for X2. Orihuela has the necessary experience not to lose this match, considering the defensive lapses of Madrid.1

3. Fuenlabrada vs CD Coria

This is one of the most difficult matches to predict in the round. Coria is fighting for the top spots (4th position), while Fuenlabrada is a typical average team with 23 points. ¹

Mathematical profile:

• Fuenlabrada: $W\%: 33\%$, $D\%: 28\%$, $L\%: 39\%$, $GF _{ avg}: 1.22$, $GA_{avg}: 1.11$.
• CD Coria: $W\%: 44\%$, $D\%: 33\%$, $L\%: 23\%$, $GF _{ avg}: 1.22$, $GA_{avg}: 0.78$.

Force calculations:

Interestingly, both teams have identical attack power in terms of average goals, but Coria has one of the best defenses in the league ($GA: 0.78$). Coria’s defense power is $1.01$ compared to $0.95$ for Fuenlabrada.1

Forecast and Harmony:

The predicted goals are $ 1.48 : 1.42$, which is almost perfect parity. The Poisson probabilities are distributed as 37% for the home team to win and 36% for the away team.1 The Harmony Index is 9.90.

Verdict: With a V3 value of just $0.01$, the model firmly stands behind the X sign. The mathematical harmony here is in the balance of the defensive lines.1

4. RSD Alcala vs. San Sebastian Reyes

San Sebastian Reyes is the main chaser of the leader, taking second place with 33 points. ¹ Alcala is in the middle of the table and is known for its discipline. ⁴

Mathematical profile:

• Alcala: $W\%: 33\%$, $D\%: 33\%$, $L\%: 34\%$, $GF _{ avg}: 1.06$, $GA_{avg}: 1.22$.
• SS Reyes: $W\%: 56\%$, $D\%: 17\%$, $L\%: 27\%$, $GF _{ avg}: 1.28$, $GA_{avg}: 0.89$.

Force calculations:

The attacking power of the visitors ($2.11$) is significantly higher than that of Alcala ($1.73$). Defensively, however, Alcala maintains a good level ($0.83$), close to that of the title contender ($0.85$).1

Forecast and Harmony:

$xG$ values of $1.29$ for the home team and $1.47$ for the away team point to an advantage for SS Reyes (42% chance of winning).1 Harmony Index is 7.85.

Verdict: V3 of $-0.11$ classifies the match as X2. The visitors have more motivation and better finishing statistics.1

5. Socuellamos vs CF Intercity

A clash of extremes – the last Socuellamos hosts the 5th CF Intercity. ⁴

Mathematical profile:

• Socuellamos: $W\%: 11\%$, $D\%: 28\%$, $L\%: 61\%$, $GF _{ avg}: 0.67$, $GA_{avg}: 1.50$.
• Intercity: $W\%: 39\%$, $D\%: 39\%$, $L\%: 22\%$, $GF _{ avg}: 1.50$, $GA_{avg}: 1.17$.

Force calculations:

Here you can see the biggest divergence in attacking power for this round: $1.39$ for the home team vs. $2.11$ for the away team. Socuellamos has serious difficulties in scoring goals.1

Forecast and Harmony:

The probability of Intercity winning is calculated at 50%, while for the home team it is only 24%.1 Harmony Index is 5.29, which indicates some instability due to the high draw rate of the away team.

Verdict: The V3 value is $-0.26$, which strongly places the forecast at sign 2. This is marked as a High Confidence pick due to the statistical superiority of Intercity.1

6. Tenerife B vs. Las Palmas B

The Canary Islands derby in Segunda RFEF always brings an extra charge. Statistically, the teams are almost identical – 10th and 11th place. ¹

Mathematical profile:

• Tenerife B: $W\%: 41\%$, $D\%: 18\%$, $L\%: 41\%$, $GF _{ avg}: 1.41$, $GA_{avg}: 1.47$.
• Las Palmas B: $W\%: 39\%$, $D\%: 17\%$, $L\%: 44\%$, $GF _{ avg}: 1.28$, $GA_{avg}: 1.17$.

Force calculations:

Tenerife B shows a slightly higher attacking power ($2.23$ vs. $2.11$), but Las Palmas B’s defense is more resilient ($0.89$ vs. $0.68$).1

Forecast and Harmony:

The $xG$ values are $1.56$ for the host and $1.40$ for the guest. The Poisson distribution gives 42% for 1 and 32% for 2. The Harmony Index is 7.10.1

Verdict: With a V3 value of $0.10$, the match is rated as 1X. The home advantage factor in Canary derbies is often decisive.1

7. CD Quintanar del Rey vs Rayo Vallecano B

Quintanar is in 17th place and is on a losing streak, while Rayo B is in 9th and is showing a very aggressive style of play. ⁴

Mathematical profile:

• Quintanar: $W\%: 22\%$, $D\%: 22\%$, $L\%: 56\%$, $GF _{ avg}: 0.83$, $GA_{avg}: 1.11$.
• Rayo B: $W\%: 47\%$, $D\%: 6\%$, $L\%: 47\%$, $GF _{ avg}: 1.18$, $GA_{avg}: 1.59$.

Force calculations:

Rayo B’s attack is solid ($2.12$), but their defense is one of the weakest in the top half of the table ($0.63$). Quintanar, however, lacks the capacity to take advantage of this with an attack of just $1.61$.1

Forecast and Harmony:

The model gives a 54% probability of Rayo B winning. The Harmony Index is 3.92, which is the lowest value in the round, reflecting the chaotic style of the visitors.1

Verdict: Despite the low stability, V3 of $-0.31$ makes token 2 the most logical choice. It is marked as High Confidence due to the huge difference in potential.1

8. CDA Navalcarnero vs Getafe B

Navalcarnero is one of the toughest hosts (8th place), hosting 3rd place Getafe B. ¹

Mathematical profile:

• Navalcarnero: $W\%: 33\%$, $D\%: 39\%$, $L\%: 28\%$, $GF _{ avg}: 1.11$, $GA_{avg}: 1.06$.
• Getafe B: $W\%: 50\%$, $D\%: 22\%$, $L\%: 28\%$, $GF _{ avg}: 1.67$, $GA_{avg}: 1.28$.

Force calculations:

Getafe B has the best attack in the group ($2.45). Navalcarnero responds with a strong defense ($0.90) and a high tendency to draw.1

Forecast and Harmony:

$xG$ values are $ 1.20 : 1.68$. The probability of the away team winning is 50%. Harmony Index is 5.41.1

Verdict: V3 value of $-0.24$ points to sign 2. Getafe B is in better form and has a higher scoring ability at the moment.1

9. Rayo Majadahonda vs Conquense

The leader against the 6th. Majadahonda dominates the championship, but Conquense is the team with the most draws (9 in 18 matches). ¹

Mathematical profile:

• Majadahonda: $W\%: 61\%$, $D\%: 28\%$, $L\%: 11\%$, $GF _{ avg}: 1.39$, $GA_{avg}: 0.56$.
• Conquense: $W\%: 33\%$, $D\%: 50\%$, $L\%: 17\%$, $GF _{ avg}: 1.06$, $GA_{avg}: 0.89$.

Force calculations:

Majadahonda has an impressive defense ($0.94$) and attack ($2.11$). Conquense is solid defensively ($0.95$), but their attack is weaker ($1.56$).1

Forecast and Harmony:

Expected goals: $ 1.53 : $ 1.25. Chance of home win is 45%. Harmony Index is 7.00.

Verdict: V3 value is $0.17$, which according to the protocol is a clean 1. The leader should win, despite the defensive wall of the guests.1

Summary table of mathematical predictions: 19th round

All calculations are summarized in the following table for quick user orientation. ¹

Meeting	Est. goals (H:A)	Predicted outcome	Verdict (V3)	Category	Coefficient (估)
Ilicitano – Moscardo	1.30 : 1.26	X	0.00	Standard	3.40
RM C – Orihuela	1.34 : 1.53	X2	-0.12	Standard	1.45
Fuenlabrada – Coria	1.48 : 1.42	X	0.01	Standard	2.96
Alcala – SS Reyes	1.29 : 1.47	X2	-0.11	Standard	1.35
Quintanar – Rayo B	1.12 : 1.71	2	-0.31	High Confidence	2.10
Navalcarnero – Getafe B	1.20 : 1.68	2	-0.24	High Confidence	2.25
Socuellamos – Intercity	1.07 : 1.56	2	-0.26	High Confidence	1.95
Tenerife B – LP B	1.56 : 1.40	1X	0.10	Standard	1.40
Majadahonda – Conquense	1.53 : 1.25	1	0.17	High Confidence	1.85

¹

Deep insights and anomaly analysis

The problem with the “duplicate teams ” ( B and C squads)

The 19th round features four reserve teams (Getafe B, Rayo Vallecano B, Las Palmas B, Tenerife B) and a third team (Real Madrid C). ⁴ Mathematical analysis shows that these teams have lower defensive stability, which artificially inflates the expected goals ($xG$) in their matches. ¹ For example, the Rayo Vallecano B match has the lowest Harmony Index (3.92), which means that the standard deviation of the probabilities is large. These are matches in which the statistical model is subject to the greatest pressure from external factors such as call-ups of players to the first squads. ¹

Effectiveness of the Harmony Index as a filter

No “Platinum Selection ” ( HI > 100) has been identified for this round. This is a clear indicator that the betting market is well balanced and there are no obvious mathematical “breakouts”. ¹ The highest harmony value is observed in the match Ilicitano – Moscardo (11.68) . Usually, higher harmony at the bottom of the table suggests a “stalemate”, where both teams are equally unable to dominate, which reinforces the prediction of a draw. ¹

The defensive hegemony of Rayo Majadahonda and CD Coria

The model yields extremely high defensive strengths for these two teams ($0.94$ and $1.01$ respectively). ¹ In Segunda RFEF, a solid defense is often a more profitable asset than an aggressive attack. Majadahonda’s win prediction (V3 = 0.17) is reinforced by the fact that they only concede $0.56$ goals per game, making it almost impossible for teams like Conquense to pull off a comeback. ¹

Risk management and consumer safety

As your guardian angel, Cara emphasizes that mathematical protocol is a tool for objectivity, but it works best with strict adherence to discipline. ¹

Strategic recommendations:

1. Disciplined Bet: Focus on the selections with “High Confidence” – in this case, wins for Rayo Majadahonda and Rayo Vallecano B. ¹
2. Avoiding emotional traps: The Tenerife B – Las Palmas B match is loaded with emotions that statistics cannot fully capture. The small V3 (0.10) indicates that the risk is high, so 1X is the only mathematically justified position. ¹
3. Harmony Application: Use the Harmony Index value as a weight for your bet size. A higher index allows for slightly more exposure, while low values (such as Quintanar – Rayo B) require caution, despite the strong verdict. ¹

In conclusion, the 19th round of the Segunda RFEF Group 5 offers interesting opportunities for those who trust the numbers. The mathematical advantage is built by identifying matches where the strength of the attack meets a broken defense, and where the stability of the model is above average. ¹ Be sensible, follow the protocol and remember that success is the result of consistency