Young Avalanche forwards J.T. Compher and Tyson Jost will miss extensive time with a broken thumb and lower-body injury, respectively, coach Jared Bednar said Friday. Compher, 22, is out indefinitely and Jost, 19, will miss 2-3 weeks. Both were injured in Thursday’s 4-3 loss to the visiting St. Louis Blues. The Avs will call up a forward or two from San Antonio of the American Hockey League over the weekend but Bednar wants to scout Rampage games Friday and Saturday before choosing the player(s). “We’re going to watch what happens there tonight and tomorrow and then make an educated decision and probably get some guys up for Sunday (practice),” Bednar said after an optional practice Friday. Defenseman Patrik Nemeth, who also left Thursday’s game with an injury, is day-to-day but probably won’t miss the next game.