Up to this point, it looked like Fernando Mendoza was having a pretty smooth transition to the NFL game. That smooth transition hit a few bumps in the road Sunday. Day four of Raiders camp was a rough one for Mendoza. It was a second-year former undrafted cornerback giving Mendoza a fine 'welcome to the NFL' moment. This article originally appeared on Raiders Wire: Fernando Mendoza has roughest day of Raiders training camp to date