The death of former Orioles and Cubs pitcher Brian Matusz stunned many in and around Major League Baseball last week; his cause of death has now been revealed.

Former Orioles left-handed pitcher Brian Matusz likely died from a drug overdose, according to Phoenix police.

The cause of death of former Baltimore Orioles pitcher Brian Matusz likely is a drug overdose, The Baltimore Banner reported.

Former Baltimore Orioles pitcher Brian Matusz reportedly died from an apparent drug overdose, according to a report.

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.

Former Baltimore Orioles pitcher Brian Matusz has died, the team announced Tuesday night. He was 37. No cause of death was given. MASN's Roch Kubatko relayed that Matusz died Tuesday morning.

Former Baltimore Orioles player Brian Matusz died on Tuesday, Jan. 7, the team announced in a statement. He was 37.

Ex-Orioles pitcher Brian Matusz, 2005 Arizona player of the year, was found dead on Jan. 6. A report Tuesday said he likely died from a drug overdose.

Former MLB pitcher Brian Matusz reportedly died of a drug overdose in Arizona earlier this month. The former Baltimore Orioles player was found dead in his home by his mother with a white substance in his mouth and drug paraphernalia near him on the floor ...

Brian Matusz, the former Baltimore Orioles pitcher who died last week at 37, likely died from a drug overdose, according to a Phoenix police report obtained by the 'Baltimore Banner' and 'Baltimore Sun.

Former Baltimore Orioles pitcher Brian Matusz died of a suspected drug overdose, according to the Phoenix Police Department.

Former No. 4 overall pick in 2008 Brian Matusz died Jan. 6, likely the result of a drug overdose according to Phoenix police. He was 37.