Rod Beck, an All-Star relief pitcher who wore a bushy mustache while earning 286 career saves, was found dead Saturday. He was 38.

Beck was found by police officers responding to a call to his home in suburban Phoenix, police department spokesman Andy Hill said Sunday. Foul play is not suspected, though the cause of death might not be known for several days.

With unruly hair framing a menacing stare and an aggressive arm swing before delivering a pitch, the outgoing right-hander was a colorful baseball personality and a three-time All-Star. He spent the first seven of his 13 major league seasons with the San Francisco Giants.

Beck was popular with teammates, fans and reporters but battled personal demons late in his life. He abruptly left the San Diego Padres for a two-month stint in drug rehabilitation during his final season in 2004.

Nicknamed "Shooter," Beck pitched for the Giants (1991-97), the Chicago Cubs (1998-99) and the Boston Red Sox (1999-2001) before finishing his career with the Padres (2003-04).

While working his way back to the majors in 2003, Beck pitched for the Triple-A Iowa Cubs and lived in his Winnebago, parked just beyond the outfield fence. Fans would drop by for autographs and stay for a beer, and Beck became a folk hero. Then the Padres called.

Beck was involved in charity work with the Pediatric AIDS Foundation and other worthy causes during his time in San Francisco.