Cowboys QB Dak Prescott does work with training ball

Injured Dallas Cowboys quarterback Dak Prescott was back at practice Thursday … gripping and throwing a training ball.Prescott did not throw a football or take any snaps. But his presence at practice, 10 days removed from surgery on his right thumb, comes a day after owner Jerry Jones said Prescott could be back at full practice in two weeks.That projection is well ahead of initial estimates of Prescott’s return in four-to-six weeks from a broken thumb on his throwing hand.However, an orthopedic surgeon told The Dallas Morning News that Jones’ projection was “realistic.””It would be pushing it a bit, but I think it’s definitely realistic,” Dr. David Hay told the News. “The fracture is outside the motion part of the joint and inside the bone of the thumb.”