3. Charlie Joiner, 39 in 1986
Notice a trend here? All of the players who played late into their careers on the Chargers are players who have gone down as some of the best of all time. Gates is one of the best tight ends ever and a future Hall of Famer, Bennett was one of the best punters of his generation and is extremely influential and Charlie Joiner is a Hall of Famer and one of the best receivers in franchise history.
In fact, there is only one receiver in Chargers franchise history that can say they are better than Joiner and that is Lance Alworth, who is not going to be the best receiver in team history in a few years. Keenan Allen is hot on the tails of Alworth and Joiner and when it is all said and done he will likely be considered the best receiver in Chargers history.
While not the best receiver in franchise history, Joiner was part of the most influential period in Chargers history. Joiner was Dan Fouts' number one wide receiver target in the late 70s and early 80s as part of the Air Coryell offense.
The Chargers and Don Coryell were decades ahead of their time as they adopted an offensive style that would fit in perfectly with today's game. The NFL was not ready for it forty years ago but the problem was that the Bolts also had a horrible defense, so they could never reach the Super Bowl.
Joiner joined the Chargers at 29 years old in 1976 and spent 11 seasons with the team, eventually hanging it up after the 1986 season. Joiner played in 15 games in his last season, recording 440 receiving yards and two touchdowns. He instantly joined the team's coaching staff in 1987.