Former major league left-hander Brian Matusz has died. He was 37. Matusz spent eight seasons in the majors, mostly with the Baltimore Orioles as they returned to prominence a decade ago.

No cause of death was immediately revealed, and police have launched a "death investigation" after the pitcher's body was found at his Phoenix home.

Brian Matusz, a former Orioles left-handed pitcher and first-round draft pick, died Tuesday, the ballclub announced. He was 37. Matusz pitched parts of eight seasons in Baltimore after the club selected him with the No. 4 overall pick in the 2008 draft.