Wilcox played well in his first NFL start Sunday against St. Wilcox said his father was at the Cowboys’ first home game against the Giants and was back at AT&T Stadium on Sunday to watch his first career start against the Rams. Marshell Wilcox, 49, died the next night. J.J. Wilcox finished Sunday with three tackles and had an interception taken away from him after Cowboys defensive end Jason Hatcher was called for a roughing the passer penalty early in the third quarter. His mother would have plenty of reason to be proud of her only son. He seemed on the verge of challenging 10-year veteran Will Allen for a starting job after a strong outing in a preseason game against the Oakland Raiders before getting a phone call he’d long feared.