- Starter matchup: Ryan Gusto (Miami Marlins) vs Merrill Kelly (Arizona Diamondbacks).
- Lineup status: projected until official release.
- NRFI model: 52% probability, lean YRFI, -4.2% edge.
Pitching Matchup
On the season, Ryan Gusto holds the ERA edge in this matchup. Ryan Gusto carries a 4.14 ERA and 1.40 WHIP, while Merrill Kelly sits at 4.97 ERA and 1.46 WHIP.
Strikeout rates: Ryan Gusto at 7.47 K/9, Merrill Kelly at 6.04 K/9.
K projections: Ryan Gusto at 2.9 (line 3.5)
Merrill Kelly projected at 3.4 (line 4.5).
First-inning scoring: Ryan Gusto holds a 75.3% career NRFI rate, Merrill Kelly at 68.5%. Combined average: 71.9%.
Both starters throw from the R side, limiting platoon splits for either lineup.
Strikeout Projections
Our strikeout model weighs pitcher K rate, opponent lineup whiff tendency, park factors, and umpire zone size to project total strikeouts per starter.
- Ryan Gusto (Miami Marlins) is projected for 2.9 strikeouts against a posted line of 3.5. The projection is close to the line with no actionable edge.
- He faces a moderate-K lineup that strikes out at 23.0% with a 28.0% whiff rate.
Merrill Kelly (Arizona Diamondbacks) is projected for 3.4 strikeouts against a posted line of 4.5. The projection sits 1.1 K below the line, giving the model an Under lean.
He faces a moderate-K lineup that strikes out at 23.3% with a 28.0% whiff rate.
The Miami Marlins lineup is more vulnerable to strikeouts in this matchup. Arizona Diamondbacks batters K at 23.0%, Miami Marlins batters at 23.3%.
NRFI & First 5 Analysis
Our NRFI model analyzes both starting pitchers' first-inning profiles, the top-of-order hitters in each lineup, the umpire's historical zone, and environmental factors to produce a probability estimate. For this game, the model assigns a 51.9% probability of no runs in the first inning, compared to the market's implied probability of 56.1%.
- That creates a slim -4.2% edge on YRFI.
- The best available line is NRFI -128 / YRFI +104 at FanDuel.
- Home plate umpire Chris Segal runs a wide zone. See the umpire section below for full career data.
- Our NRFI model sits at 156-145 (51.8%) on official picks this season.
Prop Edges
Lineup & Matchup Breakdown
Lineups are projected as of this writing.
Miami Marlins K vulnerability: 23.3% strikeout rate, 28.0% whiff rate.
Arizona Diamondbacks K vulnerability: 23.0% strikeout rate, 28.0% whiff rate.
Ballpark, Weather & Umpire
- Chase Field carries a 1.05 run factor (neutral).
- Home run factor: 1.09 — the park elevates HR power.
- Park notes: High desert elevation (1100ft); Retractable roof; Hot climate.
- Roof: Retractable.
Climate controlled. Roof expected closed. Standard 72F conditions, no wind factor.
- Home plate umpire: Chris Segal.
- Career NRFI rate: 42.9% across 7 games tracked.
- Zone tendency: Wide.
- K factor: 0.929 (below average strikeouts in his games).
Run Projections & Total
- Our projection model puts the total at 5.6 combined runs, with Miami Marlins projected for 2.8 and Arizona Diamondbacks for 2.7.
- That's 2.9 runs below the posted total of 8.5, suggesting a lean toward the Under.
- The run projection is essentially a coin flip between these two teams.