Conversation so far:
When did Sanu play with the Chargers?
Seau entered the NFL draft after his junior season and was chosen in the first round of the 1990 NFL Draft by Bobby Beathard's San Diego Chargers.
What position did he play?
CANNOTANSWER.
What did he accomplish during his time with the Chargers?
Seau started 15 of the 16 games he played in during his rookie season, and was named an alternate to the 1991 Pro Bowl after recording 85 tackles.
What else did he do?
He started no fewer than 13 games for the Chargers over each of the ensuing 11 seasons, registering a career high with 155 tackles in 1994.
Did he haev any other notable achievements during this time?
Seau was named NFL Defensive Player of the Year by United Press International, and he led his team to a championship appearance in Super Bowl XXIX.
What else did he do with the Chargers?
In one of the greatest games in his career, he recorded 16 tackles in the 1994 AFC Championship Game while playing with a pinched nerve in his neck.

Question: How long did he stay with the Chargers?
Self-contained rewrite: How long did Junior Seau stay with the San Diego Chargers?