Northern Iowa coach Mark Farley may make a change at quarterback for Saturday’s game against Stephen F. Austin. Panther starter Griff Jurgens has struggled with an injured knee and back-up Tom Petrie could see extensive action.Farley says Jurgens hurt his good knee in the Wayne State game. A fluid build-up on his knee was drained Friday. Farley says how healthy Jurgens is at game time will determine who plays.Farley says the quarterback race was close to start with, and the final decision on who will start will depend on Jurgens’ health.Farley says as of now, Jurgens is considered the starter. He says what happens after the start of the ballgame depends on Jurgens’ healthU-N-I is 1-1 on the season.