The Baltimore Orioles have confirmed the death of their former pitcher Brian Matusz at the age of 37. The team did not give a cause of death.

“Our hearts are heavy tonight as we mourn the passing of former Oriole Brian Matusz,” the team said in a statement Tuesday evening. “Brian was an integral part of our clubhouse from 2009 to 2016 and was beloved throughout Birdland. His passion for baseball and our community was unmatched. He dedicated his time to connecting with all the fans he could, was a valued teammate, and always had a smile on his face. Brian’s family and loved ones are in our thoughts and prayers during this difficult time.”

Baltimore selected Matusz with the No. 4 overall pick in the 2008 draft after he was named the West Coast Conference Pitcher of the Year during his time at the University of San Diego. He made his MLB debut in August 2009 and won his first start against the Detroit Tigers. He was also a member of Baseball America’s 2010 All-Rookie Team. Over the next few years, he moved to the bullpen, where he often shined, and was eventually traded to the Atlanta Braves in 2016. He won a World Series ring that season after being acquired from the Chicago Cubs.

Matusz’s last connection to an MLB team came in 2017 when he signed a minor league contract with the Arizona Diamondbacks, a move that he said fulfilled “a childhood dream” after growing up in Phoenix.