How are NFL rookie quarterbacks playing in training camp?

Buffalo Bills rookie quarterback Josh Allen has had a solid inaugural preseason, though no one would argue that he’s blown expectations out of the water. With his first live game action approaching this week, Allen’s played most of his practices with the third string, occasionally rotating with the starters and the second string. His physical talent is apparent, with at least one “wow” throw in every practice, but the coaches are still working with him to develop consistent throwing mechanics and speed up his progressions.

As part of the “Year of the Quarterback” draft class, Allen will always be compared with the four other passers who were drafted in the first round this year (and with a…