Nelson set to start in Week 5
Landry Jones will need at least two weeks to recover from a knee injury he suffered in Week 4 that was an aggravation of his preseason issue.
"Philip's done a really good job for us," Stoops said. "In the first game, I thought he played really well overall. In the end, guys around him need to play well and come up with plays. I think Philip's more than capable. He's a really good quarterback, so we're excited to see what he can do out there."
Nelson filled in for Jones in Week 1 and was precise, completing 33 of 42 passing attempts (79 percent) and netting 218 yards, but he didn't log a TD, and Dallas lost 15-9 to the St. Louis BattleHawks.