Pittsburgh Pirates vs Atlanta Braves Preview
Today's Starting Matchup
Today's starting pitching matchup features Pittsburgh Pirates's Mitch Keller (5-2, 4.35 ERA) against Atlanta Braves's Martín Pérez (3-3, 2.79 ERA).
Atlanta Braves's Martín Pérez posts an solid 2.79 ERA this season, while Mitch Keller has been league-average at 4.35. There is a clear gap in starting pitching quality.
Advanced metrics: Mitch Keller — FIP 3.38, K% 18.2%, 68.3 IP / Martín Pérez — FIP 4.15, K% 20.5%, 51.7 IP
Team Season Comparison
2026 season record: Pittsburgh Pirates 34-29 (.540), Atlanta Braves 42-21 (.667).
Atlanta Braves holds the edge in the season standings, though Pittsburgh Pirates can't be counted out based on head-to-head matchups.
Run differential: Pittsburgh Pirates +37, Atlanta Braves +109. Atlanta Braves boasts superior run production.
Recent form: Pittsburgh Pirates on a 1-game win streak, Atlanta Braves on a 1-game losing streak.
Based on starting pitching, Atlanta Braves holds the edge.
Bullpen Analysis
Pittsburgh Pirates bullpen: 13 relievers on the active roster. Key arms: Brandan Bidois 4.35 ERA, 11K in 10.1IP, Braxton Ashcraft 2.77 ERA, 81K in 74.2IP, Bubba Chandler 4.89 ERA, 55K in 57.0IP.
Atlanta Braves bullpen: 13 relievers on the active roster. Key arms: Bryce Elder 2.63 ERA, 67K in 78.2IP, Carlos Carrasco 2.45 ERA, 4K in 7.1IP, Chris Sale 2.23 ERA, 86K in 72.2IP.
Win Probability
Projected win probability: Pittsburgh Pirates 43% vs Atlanta Braves 57%
Factors: Atlanta Braves's starter owns the lower ERA, Atlanta Braves's home-field advantage. Of course, baseball's inherent randomness means actual results may differ.
Key Tactical Points
Workload comparison: Mitch Keller averages 5.7 IP per start vs. Martín Pérez at 6.5 IP. Getting six-plus innings from the starter significantly eases the bullpen burden.