MLB matchup analysis
Angels vs Mariners Prediction, Odds and Model Pick
Sunday, September 27, 2026 at T-Mobile Park · 3:10 PM ET
Leo prediction: Seattle Mariners moneyline
The case for Seattle Mariners
The case for Los Angeles Angels
What to watch
Why the setup score is what it is
Why the price is what it is
Read the full model output
Seattle Mariners is an official moneyline pick because it clears both gates: 72.5% model win probability and 7.9/10 Lab Rating. Leo projects 72.5% against a 59.8% no-vig market number, a 12.7% model edge at -155. Seattle Mariners owns the starting pitcher edge by 22 points. Bullpen read: Elevated volatility. Seattle Mariners's pen efficiency: Effective (5.6/10). Bullpen fatigue moved this probability down 22.4 points from 94.9% (starting pitcher and team strength only) to 72.5%. Lineup check: Seattle Mariners is swinging a hot bat (+0.094 OPS); Los Angeles Angels is near its season form (-0.017 OPS). Recent form supports this side and is included in the unified run projection.
Final result
Angels 3, Mariners 7
How the analysis held up
Seattle Mariners won, the side Leo's model favored.
Logan Gilbert (Seattle Mariners), the starter Leo's pitcher score favored, actually outpitched Yusei Kikuchi: 4.0 IP, 0 ER (0.00 ERA) against 5.0 IP, 3 ER (5.40 ERA). The edge held up.
The Los Angeles Angels bullpen was flagged as elevated risk pregame (Tired). In relief it actually allowed 1 earned run over 3.0 innings (3.00 ERA) — the risk read did not show up on the scoreboard tonight. Note: 3 of the runs charged to the Los Angeles Angels pitching staff overall were unearned — not something the bullpen's stuff should be blamed for.
The Seattle Mariners bullpen was flagged as elevated risk pregame (Tired). In relief it actually allowed 3 earned runs over 5.0 innings (5.40 ERA) — the risk read showed up.
Game information
| Matchup | Los Angeles Angels at Seattle Mariners |
|---|---|
| Date | Sunday, September 27, 2026 |
| First pitch | 3:10 PM ET |
| Venue | T-Mobile Park |
| Starting pitchers | Yusei Kikuchi vs Logan Gilbert |
| Weather | Game-time forecast: 61°F, 0% precipitation chance, 7 mph wind from N. This venue has a roof, but the roof status is not confirmed. |
Starting pitcher matchup
Full Pitcher Matchup Tool →| Metric | Angels | Mariners |
|---|---|---|
| Pitching plan | Traditional starter | Traditional starter |
| Expected innings | 5 | 5⅔ |
| Throws | L | R |
| Leo pitcher score (higher is better) | 50 | 72 |
| ERA (lower is better) | 4.92 | 3.73 |
| WHIP (lower is better) | 1.54 | 1.09 |
| K/9 (higher is better) | 8.9 | 9.9 |
| K-BB% (higher is better) | 12.1% | 20.8% |
| K% (higher is better) | 22.0% | 27.3% |
| BB% (lower is better) | 9.8% | 6.5% |
| BB/9 (lower is better) | 4.0 | 2.4 |
| HR/9 (lower is better) | 0.9 | 1.4 |
| Ground-ball rate | 48.9% | 43.2% |
| Fly-ball rate | 51.1% | 56.8% |
Pitcher edge: Leo gives Logan Gilbert a 22-point edge over Yusei Kikuchi, driven mainly by WHIP (1.09 vs 1.54) and K-BB% (20.8% vs 12.1%).
How to read this: the scorecards above name the starters; every number lives in this table.
Strikeout Projections Full strikeout projections →
Same data source as the Pitcher Matchup Tool, where every starter on the slate is compared side by side.
Recent form
Full Stats page →Angels are 4-6 in their last 10 and averaging 4.1 runs per game over the last 15 days; Mariners are 5-5 in their last 10 and averaging 5.5 runs per game over the last 15 days. Season run differential separates them by almost nothing (-0.60 against -0.36).
| Metric | Angels | Mariners |
|---|---|---|
| Last 10 | 4-6 | 5-5 |
| Last 10 by venue (away team on the road, home team at home) | 3-7 on the road | 6-4 at home |
| OPS, last 15 days | 0.662 | 0.786 |
| wOBA, last 15 days (hot/cold read) | 0.299 | 0.345 |
| Runs per game, last 15 days | 4.1 | 5.5 |
| K% last 15 days (lower is better) | 26.8% | 19.5% |
Last 15 days only. Hot and cold streaks for all 30 teams live on the Stats page.
30-day offense
Full offense tool →| Last 30 days | Angels | Mariners |
|---|---|---|
| OPS | 0.651 (-0.028 vs szn) | 0.732 (+0.039 vs szn) |
| Runs per game | 3.82 (-0.222 vs szn) | 4.93 (+0.830 vs szn) |
| wOBA (model offense input) | 0.293 (-0.010 vs szn) | 0.324 (+0.016 vs szn) |
| K% (lower is better) | 27.0% (+1.5% vs szn) | 22.2% (-0.8% vs szn) |
Over the last 30 days the Mariners have been the better offense, 0.324 wOBA to 0.293. They are running hot against their own season line (+0.016 wOBA). Angels are striking out at 27.0% over the window — something the opposing starter can lean on.
Season profile
Full Stats page →| Metric | Angels | Mariners |
|---|---|---|
| Record | 62-99 | 75-86 |
| Run differential / game (team quality) | -0.60 | -0.36 |
| Runs scored / game (offense, season) | 4.04 | 4.10 |
| Runs allowed / game (defense, season, lower better) | 4.64 | 4.46 |
| Season OPS | 0.679 | 0.692 |
| K% season (lower is better) | 25.5% | 23.0% |
| OPS vs opposing hand (season) | 0.673 | 0.652 |
Season-long team quality, not recent form. Run differential and run environment come from the season standings; splits for all 30 teams live on the Stats page, including the run environment table.
The Map
Full interactive map →Every team on today's slate, on any two axes you pick. Angels and Mariners are highlighted.
Bullpen matchup
Full Bullpen Fatigue Index →Risk is what the model actually uses: fatigue blended with how well the pen has pitched. High fatigue with high efficiency is a tired pen that is still getting outs.
| Metric | Angels | Mariners |
|---|---|---|
| Fatigue | 6.3/10, Tired | 7.3/10, Tired |
| Efficiency | 1.5/10, Struggling | 5.6/10, Effective |
| Combined risk | 8.1/10, Tired | 7.0/10, Tired |
| Relief innings, last 7 days | 21.0 | 24.3 |
| Back-to-back arms | 6 | 4 |
| 7-day ERA | 9.43 | 3.33 |
| 7-day WHIP | 1.95 | 1.23 |
Fatigue measures workload. Efficiency measures recent run prevention. Combined risk is what the moneyline and totals systems use.
Run total projection
Full Totals Projections →The model projects 1.8 runs above the market total. A research lean still requires a setup rating of at least 7.0/10. Team totals remain research-only until their graded sample is established.
More games today
All matchups →Every Leo pick, graded in public
Free daily model card by email, or open today's full slate. Membership adds delivery before first pitch.
Model outputs are not guarantees. Leo provides analysis and education only. Every official pick remains visible on the Results page. 21+. If you or someone you know has a gambling problem, call 1-800-GAMBLER.