According to Mike Garafolo of USA Today, New York Giants head coach Tom Coughlin confirmed that they believe right tackle David Diehl suffered an injury to his MCL.
Coughlin confirms no ACL injury believed for Diehl. MCL thought to be the issue. If so, that's good news.
— Mike Garafolo (@MikeGarafolo) September 17, 2012
The Giants are still waiting for results of Diehl’s MRI, which will give them the confirmation they’re looking for.