Criswell signed a one-year, $800,000 contract with the Red Sox on Thursday, Robert Murray of FanSided.com reports.

BOSTON — As a swingman who has been up and down from the minor leagues several times this season, Cooper Criswell’s job is to be ready when he’s called upon. When the team needs him, it’s Criswell ...

Cooper Criswell became an unlikely hero on Friday for the Boston Red Sox, tossing seven strong innings in his first start of the season. His reward? A demotion back to the minor leagues. The 29-year ...

Criswell did not factor into the decision in Friday's 2-1 extra-inning win over the Astros, allowing one run on seven hits and two walks with four strikeouts over seven innings. Criswell allowed ...

MINNEAPOLIS — In need of a fresh arm after suffering a brutal, rain-delayed walk-off loss to the Twins on Monday night, the Red Sox called up right-hander Cooper Criswell to join the team Tuesday.