Following a day off for the Cowboys QB, ESPN writer Tony Archer says Tony Romo was "intercepted by cornerback Morris Claiborne, who did a nice job of going up for a slightly underthrown deep ball to wide receiver Terrance Williams." He also goes on to say Romo and star WR Dez Bryant had trouble getting on the same page, "Bryant was shallow with a route in the end zone with the throw just out of his grasp, and Romo overthrew Bryant on a double-move in the end zone." Some speculation has been made as to whether Romo is actually 100% healthy and ready to return yet, after back surgery in the offseason to relieve pressure on a herniated disk.
At this point there is not much to worry about but it is worth following throughout camp if he continues to struggle. He has some rust to shake off following a rough offseason. When healthy, Romo is one of the more dominant QBs in the league and can be considered a QB2 with tons of upside. He is ranked QB15 in FFToolbox 2014 cheatsheet.