Today's starting pitching matchup features Arizona Diamondbacks's Michael Soroka (6-2, 3.27 ERA) against San Francisco Giants's Trevor McDonald (2-1, 4.76 ERA).

Arizona Diamondbacks's Michael Soroka posts an solid 3.27 ERA this season, while Trevor McDonald has been shaky at 4.76. There is a clear gap in starting pitching quality.

Advanced metrics: Michael Soroka — FIP 2.95, K% 24.5%, 55.0 IP / Trevor McDonald — FIP 3.45, K% 22.3%, 22.7 IP

2026 season record: Arizona Diamondbacks 30-24 (.556), San Francisco Giants 22-33 (.400).

Arizona Diamondbacks holds the edge in the season standings, though San Francisco Giants can't be counted out based on head-to-head matchups.

Run differential: Arizona Diamondbacks +13, San Francisco Giants -53. Both clubs are evenly matched in run production.

Recent form: Arizona Diamondbacks on a 4-game win streak, San Francisco Giants on a 2-game losing streak.

Based on starting pitching, Arizona Diamondbacks holds the edge.

Oracle Park is widely considered one of the most pitcher-friendly venues in baseball.

Arizona Diamondbacks bullpen: 13 relievers on the active roster. Key arms: Brandon Pfaadt 5.60 ERA, 27K in 35.1IP, Brandyn Garcia 1.04 ERA, 8K in 8.2IP, Eduardo Rodriguez 2.31 ERA, 49K in 66.1IP.

San Francisco Giants bullpen: 13 relievers on the active roster. Key arms: Adrian Houser 5.30 ERA, 31K in 52.2IP, Caleb Kilian 2.42 ERA, 25K in 22.1IP, Erik Miller (Setup) 4.70 ERA, 23K in 15.1IP.

Projected win probability: Arizona Diamondbacks 54% vs San Francisco Giants 46%

Factors: Arizona Diamondbacks's starter owns the lower ERA, San Francisco Giants's home-field advantage. Of course, baseball's inherent randomness means actual results may differ.

Workload comparison: Michael Soroka averages 5.5 IP per start vs. Trevor McDonald at 5.7 IP. Getting six-plus innings from the starter significantly eases the bullpen burden.

Oracle Park is classified as a pitcher-friendly park. Starter endurance becomes even more critical.