Today's starting pitching matchup features San Francisco Giants's Trevor McDonald (1-0, 2.92 ERA) against Oakland Athletics's Luis Severino (2-4, 4.07 ERA).

San Francisco Giants's Trevor McDonald posts an solid 2.92 ERA this season, while Luis Severino has been league-average at 4.07. There is a clear gap in starting pitching quality.

Advanced metrics: Trevor McDonald — FIP 3.99, K% 24.0%, 12.3 IP / Luis Severino — FIP 4.42, K% 22.3%, 48.7 IP

2026 season record: San Francisco Giants 18-27 (.400), Oakland Athletics 23-21 (.523).

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

Recent form: San Francisco Giants on a 3-game losing streak, Oakland Athletics on a 1-game win streak.

Based on starting pitching, San Francisco Giants holds the edge.

San Francisco Giants bullpen: 13 relievers on the active roster. Key arms: Adrian Houser 5.79 ERA, 23K in 42.0IP, Caleb Kilian 1.40 ERA, 19K in 19.1IP, JT Brubaker 3.66 ERA, 16K in 19.2IP.

Oakland Athletics bullpen: 13 relievers on the active roster. Key arms: Aaron Civale 2.70 ERA, 35K in 46.2IP, Hogan Harris (Setup) 2.45 ERA, 24K in 22.0IP, J.T. Ginn 3.12 ERA, 34K in 43.1IP.

Projected win probability: San Francisco Giants 53% vs Oakland Athletics 47%

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

Workload comparison: Trevor McDonald averages 6.2 IP per start vs. Luis Severino at 5.4 IP. Getting six-plus innings from the starter significantly eases the bullpen burden.