John Williams dived one yard for a touchdown and, faking the same play, rookie quarterback Bobby Hebert passed one yard to tight end Mike Cobb for a score to highlight an 18-point third quarter last night in Pontiac, Mich., that gave the Michigan Panthers a 34-24 USFL victory over the Los Angeles Express.

Hebert, who completed 14 of 24 passes for 187 yards, threw a 26-yard touchdown pass to rookie wide receiver Anthony Carter in the first quarter.

Los Angeles (4-4) did not get a first down in the third quarter and a fumble by Mike Rae on his own 20 turned the game around. Panthers linebacker John Corker picked the ball up and returned it 10 yards to the 10 and five plays later Williams went over to put Michigan (4-4) ahead to stay, 24-17. A key to the drive was a personal foul call on Express defensive end Dennis Edwards that put the ball on the five.

Michigan came right back and drove 58 yards the next time it had the ball and Hebert rolled to his right after faking a dive play to Williams on the one and completed a pass to Cobb alone in the end zone to put Michigan ahead, 31-17, with 11 seconds left in the quarter.

Williams had a 59-yard run from scrimmage in the first half that is the longest in the USFL to date.