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Red Sox’ Triston Casas diagnosed with patellar tendon rupture, placed on 10-day IL

The diagnosis of Triston Casas’s knee injury is as severe as the Red Sox expected.

Casas suffered a patellar tendon rupture in his left knee in Friday’s 6-1 win over the Twins, the Red Sox announced Saturday. He was placed on the 10-day injured list as a result.

The Red Sox first baseman suffered the scary injury when he beat out a throw to first base after hitting a weak groundball in the second inning. While Casas tripped over Twins first baseman Ty France’s leg, he appeared to be falling down as he approached the base.