UTK Flash 8/16/25

Zack Wheeler Out

Zack Wheeler walked off the mound his last time out with his velocity intact and six strikeouts on the line. It looked like a routine Wheeler day. Then came the news on Saturday night: a blood clot in his pitching shoulder. For a pitcher, that’s not just a nagging elbow or barking lat. It’s a medical red light, one that carries risks far beyond innings pitched or a team’s playoff hopes. This isn’t about workload management or skipping a start. It’s about his life, especially when you consider the travel that is necessary.

Blood clots in the shoulder and arm, particularly for pitchers, often fall under a category called Paget–Schroetter syndrome. In plain terms, the subclavian vein, which runs near the collarbone, gets compressed. The repeated violent overhead motion of throwing a baseball can aggravate it until blood pools, coagulates, and threatens to move downstream. Left untreated, that clot can break loose and travel to the lungs. That’s a pulmonary embolism and those can be fatal.

What happens now? If Wheeler’s case follows the path of others before him, it will involve a vascular surgeon, a procedure to remove or dissolve the clot, and can involve the removal of part of the first rib to reduce the compression that caused it in the first place. That’s not minor. It ends seasons. It takes months of rehab but history tells us it doesn’t end careers any more, due to a better understanding of the condition and better techniques. Living through it is the first part.

Look back at Dillon Gee in 2012. A clot in his shoulder artery ended his season, but he came back to throw another 400 innings in the big leagues. Mike Foltynewicz dealt with clots in 2015, had rib-removal surgery, and returned. Alex Cobb went through the same ordeal in 2011, rib out, and pitched his best seasons after. Aaron Cook had the surgery in 2004 and carved out nearly a decade more in the majors. These aren’t one-offs. The rib removal surgery is almost standard in these cases and pitchers do come back to level.

Not every story ends well. Craig Dingman had the surgery, too, but his shoulder artery tore again. His career ended and not on his terms. Kip Wells had multiple clot-related surgeries and never found the consistency he had before. There’s risk in every direction for pitchers and there are no guarantees.

Outside baseball, the list gets even scarier. Chris Bosh’s career ended because the medically-necessary blood thinners made playing basketball impossible. Brandon Ingram had the surgery, returned, and thrived. Victor Wembanyama just lost much of last season (24/25) to a clot in the same region as Wheeler’s.

For the Phillies, this is a gut punch. Wheeler isn’t just their ace, he’s the kind of pitcher October teams are built around. Right now, baseball is a secondary concern. The timeline is unknowable until doctors decide on treatment. If surgery comes, his season is clearly over. If it’s “just” clot removal and monitoring, there’s still the reality that he’ll be on blood thinners, which make playing impossible until cleared. While a baseball pitcher isn’t dealing with the contact a football or basketball player does, there’s still risk. He’ll have the best of care, to be sure.

For the Phillies, we have to look back to the recent deadline where the team didn’t deal away Taijuan Walker despite the impending return of Aaron Nola and the presence of Andrew Painter just over the hills in Lehigh Valley. Now, that depth looks good and while losing Wheeler hurts, it doesn’t kill the team. Cristopher Sanchez has arguably been better this season, Nola’s been an ace a while, and the team doesn’t have to scramble to fill a rotation or see a big drop every fifth day.

There’s a useful comparison here to thoracic outlet syndrome (TOS), another vascular compression problem familiar to pitchers. In TOS, nerves and blood vessels get squeezed between the collarbone and first rib. The fix is the same: remove the rib, decompress the area, and hope the arm can relearn its delivery without the same entrapment. Matt Harvey had the surgery in 2016. He never returned to form, his velocity down and command never right, though there were many other issues that contributed. Chris Archer had the rib removal as well and while he did make it back, he was a shadow of his All-Star self. On the flip side, pitchers like Alex Cobb or Jaime Garcia found stability again after their procedures.

That’s the comp that matters for Wheeler. The surgery path, if taken, is essentially the same as TOS surgery. The difference is that Wheeler is older than most pitchers who’ve gone through it, which raises the stakes. At 35, recovery time isn’t just about healing, it’s about how much is left in the tank once he’s back. He does profile well as the kind of pitcher that could coast in his late career like a Max Scherzer or Clayton Kershaw.

Zack Wheeler’s future isn’t about the next start. It’s about the next scan, the next appointment, and the next medical decision. Baseball has seen pitchers come back from this. It’s also seen lives nearly lost. That’s the line Wheeler now walks, and until he’s on the other side of it, we keep him in our thoughts.