Amid struggles from the starting rotation, the Boston Red Sox’s bullpen has been a bright spot.

As a whole, Red Sox relievers have combined for a 2.45 ERA, good for fourth in the American League. Closer Koji Uehara has been a big part of the group’s success on the back end, but despite his performance, NESN’s Dennis Eckersley and Steve Lyons still have their concerns.

“He’s just sort of pitched so well before, so can he ever do that again? I can’t imagine,” Eckersley said. “The bar is set too high, so it scares me a little bit.”

Lyons is more concerned about Uehara’s splitter.

“That’s the pitch that everyone started going away from because they overthrew it,” Lyons said. “He’s thrown, like, five fastballs all year.”

Uehara turned 40 earlier this month.

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