Giants Make Jose Butto Announcement After Blade Tidwell Move

But the situation changed quickly, and clearly for the worse.

The Giants announced on Friday that Butto is dealing with a blood clot in his throwing arm and will undergo a procedure to remove it following a visit to Dr. Jason Lee.

"Everybody's concern immediately is going to be with someone's health," manager Tony Vitello said. "But he's a very, very, very well-liked and well-respected guy. So everyone was concerned right away. I think the fact it's not the worst-case scenario, or it could be worse, is good. Time will tell if it's a decent layoff or an extended layoff."

The updated diagnosis provides clarity after the wrong initial assesment of Butto's injury, though the team has not provided a timeline for his return.

Butto's injury leaves a gap in the bullpen, which had already been dealing with multiple absences. Tidwell, who was recalled to take Butto’s roster spot, stepped into that role immediately and recorded a three-inning save in his Giants debut on Thursday.

"It was really special," Tidwell said after his debut.

The Giants acquired Tidwell alongside Butto in the Tyler Rogers trade on July 30, and he has automatically entered the team’s relief mix as San Francisco adjusts to Butto's absence.

Butto, 28, has struggled early in the 2026 season, allowing five runs on six hits—two for home runs—across three games and two innings of work with the Giants.