Player completion percentage is simply the percentage of attempted passes that resulted in a completion.
More about Player Completion Percentage Statistics
As with most other passing statistics, the baseline for what’s expected of a quarterback is higher for completion percentage now than it was a generation ago. Even subpar quarterbacks are very likely to have a completion percentage above 60%. In today’s game there’s not a whole lot of differentiation between quarterbacks when looking at this statistics as almost all regular quarterbacks have a completion percentage between 55% and 70%. Furthermore, quarterbacks at the top of the list aren’t artificially keeping their completion percentage high by attempting fewer passes; on the contrary, many of those at the top of the leaderboard attempt more passes than those below them on this list.