Says coach Mike McCarthy of testing the health of Cowboys starters Dalton Schultz and Jayron Kearse: “(Thursday) will be a big practice and the heaviest workload we have of the week.” FRISCO – A key player on each side of the ball is on Thursday planning on taking a “full load” in practice while trying to get back on the field for the Dallas Cowboys in NFL Week 4 against the visiting Washington Commanders. Jayron Kearse suffered a knee injury in the Week 1 loss to the Tampa Bay Buccaneers, but avoided being placed on injured reserve (guaranteeing he’d miss…