Giants' Tony Vitello Makes Big Decision on Saturday

Houser, who has been inconsistent in his outings, has struggled to provide stability in the rotation despite flashing signs of impact at times. The Giants, who had backed the veteran through the first two months of the season, have lost patience due to recent results and his ongoing struggles.

Houser's 2026 season has been a difficult one. He has posted a 5.49 ERA through 12 starts and has consistently run into trouble the third time through the lineup. Those struggles have become a pattern and ultimately contributed to the decision to shift him to the bullpen.

San Francisco signed Houser to a two-year, $22 million deal this past offseason after he rebuilt his value with strong performances for the Chicago White Sox and Tampa Bay Rays in 2025.

The Giants believed that improved form would carry over and stabilize their rotation, but the results have fallen well short of expectations. Over nine major-league seasons, Houser has compiled a 40-44 record, a 4.06 ERA and 576 strikeouts, an otherwise solid track record despite his recent struggles.

The timing matters for a Giants team that enters the Marlins series with a 23-36 record and is already facing questions about its pitching depth.

The bullpen has been one of the club's weaker areas all season, and the loss of Randy Rodriguez to Tommy John surgery has only made things more complicated.

Still, the Giants are convinced that keeping Houser in the rotation is no longer their best option. The move opens a spot in the starting staff while adding an experienced arm to a bullpen badly in need of reliable innings.

Whether it fixes the rotation, strengthens the bullpen or accomplishes both remains to be seen, but it is a storyline worth watching as San Francisco tries to climb back into playoff contention in the second half.