- Starter matchup: Zac Gallen (Arizona Diamondbacks) vs Colin Rea (Chicago Cubs).
- Lineup status: confirmed by both teams.
- NRFI model: 48% probability, lean YRFI, -4.6% edge.
Pitching Matchup
On the season, Colin Rea holds the ERA edge in this matchup. Zac Gallen carries a 4.45 ERA and 1.52 WHIP, while Colin Rea sits at 4.41 ERA and 1.32 WHIP.
Strikeout rates: Zac Gallen at 5.57 K/9, Colin Rea at 8.27 K/9.
K projections: Zac Gallen at 4.2 (line 4.5)
Colin Rea projected at 5.1 (line 4.5).
First-inning scoring: Zac Gallen holds a 69.9% career NRFI rate, Colin Rea at 64.8%. Combined average: 67.4%.
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.
Zac Gallen (Arizona Diamondbacks) is projected for 4.2 strikeouts against a posted line of 4.5. The projection is close to the line with no actionable edge.
He faces a moderate-K lineup that strikes out at 22.0% with a 28.0% whiff rate.
- Colin Rea (Chicago Cubs) is projected for 5.1 strikeouts against a posted line of 4.5. The projection is close to the line with no actionable edge.
- He faces a moderate-K lineup that strikes out at 22.0% with a 28.0% whiff rate.
The Arizona Diamondbacks lineup is more vulnerable to strikeouts in this matchup. Chicago Cubs batters K at 22.0%, Arizona Diamondbacks batters at 22.0%.
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 47.8% probability of no runs in the first inning, compared to the market's implied probability of 52.4%.
- That creates a slim -4.6% edge on YRFI.
- The best available line is NRFI -110 / YRFI -110 at FanDuel.
- Home plate umpire Mike Muchlinski runs a average zone. See the umpire section below for full career data.
- Our NRFI model sits at 34-33 (50.7%) on official picks this season.
Prop Edges
Lineup & Matchup Breakdown
Lineups are confirmed as of this writing.
Arizona Diamondbacks K vulnerability: 22.0% strikeout rate, 28.0% whiff rate.
Chicago Cubs K vulnerability: 22.0% strikeout rate, 28.0% whiff rate.
Ballpark, Weather & Umpire
- Wrigley Field carries a 1.05 run factor (neutral).
- Home run factor: 1.09 — the park elevates HR power.
- Park notes: Ivy-covered left field wall; Wind factor from Lake Michigan; High wall in left (11.5ft).
- First pitch forecast: 45F with 10 mph winds from the NNE. Humidity: 69%.
- Wind advisory: 10 mph winds from the NNE may impact fly balls.
- Home plate umpire: Mike Muchlinski.
- Career NRFI rate: 52.8% across 89 games tracked.
- Zone tendency: Average.
- K factor: 1.019 (league average strikeouts in his games).
Run Projections & Total
- Our projection model puts the total at 6.0 combined runs, with Arizona Diamondbacks projected for 3.0 and Chicago Cubs for 3.0.
- That's 1.0 runs below the posted total of 7, suggesting a lean toward the Under.
- The run projection is essentially a coin flip between these two teams.