The Spokane Shock have no idea who will be the starting quarterback for Friday’s home game against Tampa Bay, but they’ll worry about that over the next few days. For now, they’re content to savor another victory over a division leader, a crisp performance that generated a 71-49 Arena Football League win over Dallas in front of 9,368 Saturday at the Arena. Spokane, despite losing quarterbacks Bill Stull and Kyle Rowley to injuries, improved to 4-5 while Central Division-leading Dallas dropped to 6-3.