Cowboys sign quarterback Aaron Corp

The Dallas Cowboys signed quarterback Aaron Corp on Tuesday.

Corp joins Tony Romo, Kyle Orton and Nick Stephens on the roster.

The Cowboys signed Corp as a camp body, but if he can make an impression, perhaps he can earn a spot on the 53-man roster.

Corp signed with the Buffalo Bills as an undrafted rookie free agent out of Richmond following the 2012 NFL draft. He was released in the spring of May 2012 and remained out of football until re-signing with Buffalo in February. The Bills released him again on April 29.

Corp played at USC in 2007 and redshirted. He was USC's third quarterback in 2008, appearing in five games, before winning the starting job in the spring of 2009. Corp cracked the top of his left fibula in fall camp that year and Matt Barkley won the starting job. Corp transferred to Richmond in 2010 and started the first five games before suffering a season-ending knee injury.

In 2011, Corp threw for 2,682 yards and 17 touchdowns. He set an NCAA FCS single-game record for completion percentage, completing 91.2 percent of his throws (31-of-34) against Towson State.