San Martín San Juan vs Atlanta: match statistics

I predict a home win (1). San Martín concedes on average 0.67 goals per home match and keeps clean sheets in 33% of home games, while Atlanta concedes 1.5 goals on average away and has 0% clean sheets. In attack San Martín scores 1.0 goals at home on average with an xG of 1.22 and a conversion rate of 10%, whereas Atlanta scores 0.5 goals away with an xG of 1.12 and a 6% conversion. Both teams are in poor recent form in points (0.6 points on average over the last 5 matches), but San Martín’s last 5: 0 wins, 3 draws, 2 losses, goals 3-5, while Atlanta: 1 win, 4 losses, goals 5-8. Visitors register slightly more shots on target (4.5 vs 3.67) and higher possession (59% vs 56%), but a 50% rate of matches without a goal and weaker conversion mean possession superiority does not translate into goals. Considering San Martín’s 0% away losses at home versus Atlanta’s 100% away losses, better xG (1.22 vs 1.12) and higher conversion, I estimate the home win probability at about 60%, draw 25% and away win 15%.

Seasonal BTTS rates are 40% for San Martín and 50% for Atlanta (average 45%), above the league average of 38%, so both teams score together more often than the league norm. In the last 5 matches both sides show a 60% BTTS rate, and Atlanta in that period has xG_for 1.62 and averages 1.0 goal, indicating the visitors create scoring opportunities. San Martín in the last 5 has xG_for 0.93 and scores 0.6 goals but concedes 1.0 goal (seasonally concedes 0.8), whereas Atlanta concedes 1.5 seasonally and has 0% clean sheets, which increases the likelihood of goals conceded on both sides. Atlanta averages 4.5 shots on target versus San Martín’s 3.6 and has seasonal xG_for 1.12 versus xG_against_home 0.96, so the visitors’ shooting potential is higher than their low goals-per-game of 0.5 suggests. Given the weight of signals from the last 5 matches (60% BTTS), higher xG and Atlanta’s lack of clean sheets, I select BTTS - Yes with a 60% probability versus 40% for No Goal.

Based on xG and opponents' defensive profiles I estimate total expected goals at ~2.27 (1.13 for San Martín San Juan and 1.14 for Atlanta): home xG 1.50 vs away xG 1.12, with xG against 0.96 for the hosts and 0.88 for the visitors. Seasonal numbers show San Martín averages 1.0 goals scored and concedes 0.8, while Atlanta scores 0.5 and concedes 1.5, giving the hosts an advantage in chance creation but similar expected goal totals. Looking at goal distributions, Over2.5 occurred in 40% of home matches and 50% of away matches, while Over3.5 only in 20% of San Martín’s matches and 0% of Atlanta’s (Under3.5: 80%/100%). A Poisson model with lambda=2.27 yields estimates of Over1.5 ≈66%, Over2.5 ≈40% and Over3.5 ≈20%, which translates into the strongest signal for Under3.5 (~80%). Therefore I recommend backing Under 3.5 — the low frequency of 4+ goal games (20%/0%) and moderate xG figures (1.13 and 1.14) indicate the match is unlikely to exceed 3 goals.

At half-time a draw is the most likely outcome: the home team have been level at the break in 60% of matches, while the visitors have been level at half-time in 100% of their appearances, so a draw at 45 minutes is the dominant state. After the break the home side’s advantage is pronounced – San Martín scores an average of 0.8 goals in the second half and collects an average of 1.6 points in that period, whereas Atlanta scores 0.0 goals after the break and obtains no points in the second half, which favors a turnaround in favor of the hosts. xG and chance creation also favor San Martín: xG 1.5 versus 1.12 for Atlanta, 12 shots compared to 9 and higher conversion 8% versus 6%. Additionally, Atlanta have no wins this season (0% wins, 100% losses), while the hosts win 40% of matches, which reduces the probability of an away victory after the break. Therefore the strongest signal is a draw at half-time and a home win after 90 minutes (X/1), so I assigned 36% to X/1, 21% to X/X and smaller shares to the remaining scenarios.