Struggling San Francisco Ace Placed on Injured List with Knee Injury

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The San Francisco Giants‘ rotation has yet another concern. Logan Webb was sent to the 15-day injured list Saturday afternoon with bursitis in his right knee. The move is retroactive to Wednesday.

Webb had exited his most recent start on Tuesday with discomfort in his knee, throwing only four innings before being forced out of the game. He allowed six runs, raising his ERA to 5.06. That punctuated what has been an abysmal 2026 so far for the right-hander.

His metrics have been just as bad as this performance, with the righty posting below-average marks in everything except for his fastball run value (70th percentile). The run value of his offspeed pitches has taken a sharp decline, from being ranked in the 98th percentile in 2025 to the 38th this year.

It’s not all bad. To be fair to Webb, some of it has been bad luck. His xERA is half a run lower than his actual ERA, comparing a 4.57 xERA to his 5.06 actual mark. But that’s not much better for a pitcher who’s long been viewed as one of the best in the National League.

The Giants have been struggling lately, and the loss of Webb does nothing to help matters despite his difficulties lately. He shouldn’t be out too long, with knee bursitis typically taking 1-2 weeks to recover from. Hopefully, the stint on the IL should help Webb reset for the rest of the season.

Who Takes Webb’s Place?

In a corresponding move, Trevor McDonald was recalled from Triple-A. He’s pitched well in recent seasons and marks a continuing trust in the Giants’ younger players to step up this year. He was called up to start against the San Diego Padres last week and held the club to just one run on two hits across seven full innings. He struck out seven batters in that start, showing plenty of promise.