Neither player made the trip to Colorado Springs, the Fort Worth Star-Telegram reported Friday.
Both players aggravated injuries during the loss to Baylor last week. Brock, who led the team in tackles last season with 106, is recovering from offseason foot surgery. Kris Gardner is listed as his backup on the depth chart. He has never started a game.
Wesley hurt his shoulder during a scrimmage in August. He missed the second half of the game against the Bears after getting just six carries for 36 yards. The Horned Frogs are deep at running back, so Matthew Tucker and Waymon James should once again handle the load.
Andrea Adelson is a national college football blogger for ESPN.com.