Today's starting pitching matchup features Arizona Diamondbacks's Mitch Bratt (0-0, 5.06 ERA) against Washington Nationals's Foster Griffin (11-2, 2.68 ERA).

Washington Nationals's Foster Griffin posts an solid 2.68 ERA this season, while Mitch Bratt has been shaky at 5.06. There is a clear gap in starting pitching quality.

Advanced metrics: Mitch Bratt — FIP 7.41, K% 13.7%, 10.7 IP / Foster Griffin — FIP 3.96, K% 23.5%, 117.3 IP

2026 season record: Arizona Diamondbacks 55-49 (.529), Washington Nationals 52-52 (.500).

Recent form: Arizona Diamondbacks on a 4-game win streak, Washington Nationals on a 1-game losing streak.

Based on starting pitching, Washington Nationals holds the edge.

Arizona Diamondbacks bullpen: 13 relievers on the active roster. Key arms: Brandon Pfaadt 4.43 ERA, 45K in 65.0IP, Brandyn Garcia (Setup) 1.69 ERA, 30K in 26.2IP, Eduardo Rodriguez 2.64 ERA, 86K in 122.2IP.

Washington Nationals bullpen: 13 relievers on the active roster. Key arms: Andrew Alvarez 4.22 ERA, 55K in 53.1IP, Cade Cavalli 3.58 ERA, 127K in 110.2IP, Carson Palmquist 9.24 ERA, 15K in 12.2IP.

Projected win probability: Arizona Diamondbacks 39% vs Washington Nationals 61%

Factors: Washington Nationals's starter owns the lower ERA, Washington Nationals's home-field advantage. Of course, baseball's inherent randomness means actual results may differ.

Workload comparison: Mitch Bratt averages 3.6 IP per start vs. Foster Griffin at 5.9 IP. Getting six-plus innings from the starter significantly eases the bullpen burden.

Foster Griffin has allowed 17 HR this season — a concern against a lineup with extra-base power.