Saturday morning, the Red Sox announced Casas has suffered a ruptured patellar tendon in his left knee.
Casas has been placed on the 10-day injured list, and Boston called up infielder Abraham Toro out of Triple-A Worcester. Executive Craig Breslow told the media the Sox are anticipating the injury to be season-ending.
Casas, 25, has slashed .184/.279/.306 with three home runs and 11 RBIs for the Red Sox this season.
He is two years removed from a 2023 campaign where he bashed 24 home runs and finished third in the American League Rookie of the Year voting.
More MLB on Sports Illustrated
Josh Wilson
Josh Wilson is the news director of the Breaking and Trending News team at Sports Illustrated. Before joining SI in 2024, he worked for FanSided in a variety of roles, most recently as senior managing editor of the brand’s flagship site. He has also served as a general manager of Sportscasting, the sports arm of a start-up sports media company, where he oversaw the site’s editorial and business strategy. Wilson has a bachelor’s degree in mass communications from SUNY Cortland and a master’s in accountancy from the Gies College of Business at the University of Illinois. He loves a good nonfiction book and enjoys learning and practicing Polish. Wilson lives in Chicago but was raised in upstate New York. He spent most of his life in the Northeast and briefly lived in Poland, where he ate an unhealthy amount of pastries for six months.