APRIL 4: The Giants announced today that Butto’s recovery timeline is 2-4 months.
APRIL 3: Giants reliever José Buttó has a blood clot in his throwing arm, the team told reporters (via Alex Pavlovic of NBC Sports Bay Area). He’s undergoing a procedure this evening to remove it.
Buttó landed on the 15-day injured list yesterday. The team initially announced that only as arm fatigue. The clot provides a little more clarity, but there’s no return timeline. Susan Slusser of The San Francisco Chronicle relays that it appears Buttó had pitched through the issue for a while before the clot was diagnosed earlier today.
Blood clotting can be associated with thoracic outlet syndrome. That was the case for Phillies ace Zack Wheeler, for example. The Giants have not said anything about whether that’s a fear for Buttó. However, skipper Tony Vitello told Slusser there are a few possible procedures that the right-hander might undergo.
San Francisco acquired Buttó from the Mets as one of three players in the Tyler Rogers deal last summer. Blade Tidwell, another part of the Rogers return, was coincidentally recalled to take his place in the bullpen yesterday. Buttó turned in a 4.50 ERA across 20 innings down the stretch. He surrendered five runs on six hits and four walks over two innings to begin the 2026 season.

That sounds painful.
As an Astros fan should know, potentially worse than painful. Thank goodness they are better able to deal with such things now than in the time of JR Richard.
Richard was before my time, but yes, I know about him. I think the Astros should retire his number in honor. In 1976, something clicked, and he just became a monster.
Sickening
Lard is not good for you.
You are mistaken. The cause of most blood clots at his age and his profession (pitching), are caused or related to T.O.S.. The repeated throwing motion can cause clots to form in the arm. That’s it. Not lard related.
Lard is not good for you
Get well soon Butto!
Get well soon prayers
Tough break. Rough stuff. Get well soon, worry about your health before baseball.
Blood clots are no joke. Had one myself I
n my arm last year. Hope he recovers
Bad timing for Butto.
Not really effective in his outings this year, and quite a few hungry arms waiting for a spot. Hope he recovers soon, but in reality he may lose his job. Tough break.
Scary. Get well dude
Tough for Butto, but the one area SF has depth is its middle relief so not as crippling as if it was a position player
Bummer. Looked good in the WBC
Some things are bigger than baseball. Get well soon, dude. It’ll still be here when you return.
Scary I’m glad they found it. Hopefully he recovers quickly
For now they will do catheter thrombolysis/thrombectomy but then shortly after he will need surgery for vascular thoracic outlet syndrome with first rib resection on that side. And he will be on blood thinners for 3-6 months. He will be on IL for a while. Opportunity for Tidwell .
Incidences of blood clots are sure up since the whole Covid fiasco. But nobody really wants to point a finger at what could possibly be contributing to it more than anything else….
It’s harder to convince somebody they’ve been fooled, then fool fool them in the first place.
I’m surprised people aren’t more angry.
But that would mean accepting that they were fooled!
That’s a big loss for an already thin Giants bullpen.
The writer should have included the information that Butto made five appearances for Venezuela in the WBC, including back-to-backs. Very poor reporting when the cause of his problem is in plain sight.
Borucki is so sucky.
Please replace him with any creature with an arm. Thanks.
MLBTR has reported nothing on the Giants in over a week.
OTOH, nothing has happened.