Career
He was signed by the San Diego Chargers as a free agent in 1986 after playing three years in the USFL. He played college football at California. Plummer played his first two years of junior college football at Ohlone College and then transferred to the University of California, Berkeley. Oakland Invaders
After going undrafted in the 1983 NFL Draft Plummer joined the Oakland Invaders of the United States Football League (USFL).
He played three years for the team
He played in the 1985 USFL Championship Game. San Diego Chargers
After USFL folded after 1985, Plummer was signed up by the San Diego Chargers.
Plummer became a starter during his first season with the Chargers and started 106 of 119 games during the eight seasons he played there. He finished his career with the Chargers with 792 tackles, 3.5 sacks, and five interceptions.
San Francisco 49ers
Before the 1994 season Plummer signed with the San Francisco 49ers.
After the 1997 season Plummer retired with 1,029 tackles, 4.5 sacks, and six interceptions. From 1998 until April 2011 Plummer was a color analyst for KNBR 49ers game broadcasts. He was fired from this position due in large part to frequent criticism of the team during broadcasts as well as comments in an off-color podcast in which he recounted his former teammates" sexual exploits, as well as his own.
