Question

Among quarterbacks who started at least half of last season, which one had the highest passer rating on third downs? This player isn't one of the first 25 or so that you would guess, and he's on a new team this year.

Answer

Kellen Clemens. He completed 62 percent of his passes on third downs last year, with 5 TDs and no interceptions. His 110.6 passer rating on third downs was the highest in the league. He will back up Philip Rivers this year.