Red Sox 'best-kept secret' is 2.97 ERA reliever who was a WBC star for Team Italy originally appeared on The Sporting News . Add The Sporting News as a Preferred Source by clicking here .
The Boston Red Sox have plenty of players taking center stage, with Roman Anthony , Garrett Crochet , and in the bullpen, Aroldis Chapman and Garrett Whitlock , all being noteworthy players.
But there is another reliever pitcher that Red Sox fans know well, but some other teams might not. Boston's "best-kept secret," according to Tim Kelly of Bleacher Report , is a righty reliever named Greg Weissert .
He showed up for Team Italy at the World Baseball Classic, and so far in his Red Sox career, he has been a very good reliever. He's a key component of the Boston bullpen, but isn't a household name like Chapman or a well-known reliever like Whitlock.
Red Sox's Greg Weissert is 'best-kept secret'
"Perhaps Greg Weissert came onto your radar as Tam Italy's closer during the World Baseball Classic," Kelly writes. "Alex Cora has one of the top bullpen duos at his disposal with Aroldis Chapman and Garrett Whitlock. Weissert, though, is capable of taking down high-leverage innings when one of those two is unavailable."
Boston will rely on Chapman and/or Whitlock for the highest-leverage roles this season, but Weissert cannot be ignored for Boston.
While he's struggled a bit this season with a 9.64 ERA in five outings, he was a key contributor with some impressive statistics the last two seasons.
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In 2024, his first season in Boston, he had a 3.13 ERA in 62 games. Then in 2025, Weissert posted an impressive 2.82 ERA in 71 games, with 57 strikeouts across 67 innings.
In his five-year MLB career, which includes two season sand 29 games with the New York Yankees , Weissert has a 3.46 ERA.
The 31-year-old righty reliever isn't well-known across Major League Baseball, but he has the potential to be a key contributor out of the bullpen for Boston in 2026 and beyond.
He's under club control through 2029, so the Red Sox should be able to get plenty more productive seasons out of Weissert as a secret weapon most teams will overlook.

