Buffalo Bills quarterback AJ McCarron suffered a hairline fracture to his right collarbone in Friday's preseason game against the Cleveland Browns, the Buffalo News has reported.
McCarron started the game and completed three of six passes for 12 yards. He was sacked once in the first quarter but remained in the game until early in the second quarter.
In four offensive possessions Friday with McCarron at quarterback, the Bills' first-team offense gained a net total of 7 yards and did not gain a first down.
McCarron was replaced by rookie first-round pick Josh Allen, who led the Bills' first-team offense on an 80-yard touchdown drive in the second quarter.