AJ McCarron suffered a hairline fracture to his right collarbone during Friday's preseason game.

McCarron started the game and completed 3 of 6 passes for 12 yards. 

McCarron signed a two-year, $10 million contract with the Buffalo Bills in March after four seasons with the Cincinnati Bengals. The deal included a $4 million signing bonus, a fully guaranteed $900,000 base salary in 2018 and $1.1 million of his 2019 base salary guaranteed for injury.