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Our engine ran 10,000 Monte Carlo plate appearances of Pete Alonso against Tyler Glasnow at Dodger Stadium. It gives a 17.3% probability of a hit per plate appearance, with 33.0% strikeouts, 10.8% walks and 2.9% home runs per PA. Average simulated length: 3.35 pitches per plate appearance. No raw head-to-head rate drives any of these numbers; the inputs are regressed multi-season rates for both players (methodology below).
| Outcome | Sim probability | Rate |
|---|---|---|
| Walk | 10.8% | |
| Strikeout | 33.0% | |
| Hit by pitch | 1.0% | |
| Single | 10.7% | |
| Double | 3.5% | |
| Triple | 0.2% | |
| Home run | 2.9% | |
| Batted-ball out | 37.9% |
Where the simulated plate appearances ended, and the hit probability conditioned on that count.
| Count | PA ends here | P(hit) at count | K / BB |
|---|---|---|---|
| 0-0 | 12.9% | 31.0% | |
| 1-3 | 12.9% | 0.0% | |
| 0-3 | 11.6% | 0.0% | |
| 0-1 | 10.1% | 29.0% | |
| 2-3 | 8.5% | 0.0% | |
| 1-1 | 7.4% | 30.4% | |
| 1-0 | 5.6% | 32.0% | |
| 1-2 | 5.6% | 29.9% | |
| 0-2 | 4.6% | 32.3% |
Career line: 12 PA, 2 hits (0 HR), 0 BB, 8 SO. .167 AVG / .334 OPS. Statcast-era pitch log: 13 PA across 3 seasons (2020–2024).
| Season | PA | H | HR | BB | SO | OPS |
|---|---|---|---|---|---|---|
| 2020 | 3 | 0 | 0 | 0 | 3 | .000 |
| 2021 | 3 | 0 | 0 | 0 | 3 | .000 |
| 2024 | 6 | 2 | 0 | 0 | 2 | .666 |
Read rate: 12 career PA is 0.0% of one full batter season. One extra dropped popup changes the career average by 8.3 points.
Re-running the same 10,000 simulated PAs with Dodger Stadium's factors (hit 0.97x, home run 0.93x) moves the hit probability from 18.1% in a neutral park to 17.3%, a -0.8-point move.
Tyler Glasnow's 2026 pitch mix (15,165 pitches tracked).
| Pitch | Usage | Avg velo | Whiff / swing |
|---|---|---|---|
| Four-Seam Fastball | 49.0% | 96 mph | |
| Curveball | 20.9% | 83 mph | |
| Slider | 17.6% | 89 mph | |
| Sinker | 8.5% | 95 mph | |
| Knuckle Curve | 2.2% | 81 mph | |
| Changeup | 1.8% | 90 mph |
| Pitch | PA | H | K | Whiff / swing |
|---|---|---|---|---|
| Four-Seam Fastball | 4 | 1 | 1 | 0% |
| Curveball | 5 | 0 | 5 | 0% |
Inputs: Pete Alonso's and Tyler Glasnow's last-three-season lines (4213 PA / 2118 BF weighted 1x/2x/3x by recency), shrunk toward league average, blended with a log5 odds-ratio matchup model, conditioned on real league count-level pitch and batted-ball frequencies, and park-adjusted with committed park factors. The count process is calibrated per pair so simulated strikeout and walk rates land within 0.3% of the model targets (this page: 0.04% K error,0.03% BB error).
Head-to-head history never enters the simulation; a batter-pitcher pair shares a few dozen career PAs at most, and honesty means the model's priors are the players' own multi-season tendencies, not a 30-PA fluke. Full engine notes on the methodology page.