A lot depends on Koji Uehara’s injury

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NEW YORK — The Red Sox are an evolving team, not unlike the rest of the teams in the AL East right now. They stand out in a negative way because they’re the defending World Series champions, but they are showing flaws and injuries much like Tampa Bay, New York, Baltimore, and Toronto.

The latest issue is Koji Uehara.

Of all people to go down, he would be one of the top three most significant losses. Uehara’s shoulder stiffened during long toss before Friday’s game and he shut it down for the night.

Manager John Farrell went to Edward Mujica, the former St. Louis Cardinals closer, who earned the save in a 4-2 win over the Yankees.

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