Michigan required a disputed replay decision and a second Hail Mary attempt to avoid a damaging defeat in Kyle Whittingham’s first game as head coach.

Bryce Underwood found J.J Buchanan for a 47-yard touchdown after officials restored one second to the clock, allowing the 16th-ranked Wolverines to escape with a 13–12 victory over Western Michigan at Michigan Stadium. The remarkable conclusion preserved Michigan’s perfect record against the Broncos and immediately supplied the first major officiating controversy of the college football season.

Western Michigan appeared to have completed the upset when Underwood’s initial Hail Mary travelled beyond the end zone as the stadium and broadcast clocks reached zero. Broncos players entered the field to celebrate, but officials initiated a replay review and ruled that one second should remain. Underwood took advantage of the reprieve, evading pressure before launching another pass towards the end zone, where Buchanan rose among several defenders and secured the ball for the game-winning touchdown.

“I definitely thought the game was over because there were zeroes on the clock,” Underwood admitted afterwards.

Western Michigan president Russ Kavalhuna made a rare appearance at the postgame press conference and said the university would examine the decision, while the Mid-American Conference also contacted the Big Ten seeking an explanation. The Power Four conference subsequently stood behind the ruling and released footage accompanied by audio from the replay process that centred upon Western Michigan safety Micah Davis, who had established himself out of bounds, returning to the field and making contact with Underwood’s first pass. Under college rules, the ball became dead at the moment Davis touched it.

The conference said its replay footage showed that contact occurring with one second remaining. The MAC later confirmed that it had received the video and audio and accepted the Big Ten’s explanation — although the evidence addressed the application of the rule without entirely removing the confusion surrounding the decision. NBC rules analyst Terry McAulay noted during the broadcast that the ball still appeared to be in flight when the on-screen clock reached zero. He suggested the Hawk-Eye replay system may not have been synchronised with the stadium clock and called upon the Big Ten to explain the discrepancy.

The conference’s later release showed the evidence used by the replay officials, but the apparent difference between the two timing feeds ensured the ending remained open to debate. Whittingham said he had glanced towards the clock during the first attempt and believed one second might remain.

“The extra second was huge,” the former Utah coach acknowledged after securing an improbable victory on his Michigan debut.

The controversy should not obscure how close the Wolverines came to losing a game in which they began as 27.5-point favourites. Michigan drove 75 yards on its opening possession, with Underwood completing his first five passes before scoring on a one-yard run. The Wolverines did not add another point until Buchanan’s catch on the final play.

Western Michigan, meanwhile, controlled possession for 40 minutes and eight seconds, compared with Michigan’s 19:52, while restricting the hosts to 276 total yards and 12 first downs. The Broncos also forced three turnovers. Underwood threw an interception late in the second quarter and lost a fumble with less than two minutes remaining, while Andrew Marsh muffed a punt. Dieter Kelly converted four field goals for Western Michigan, including efforts from 52 and 45 yards during the first half.

The Broncos moved ahead for the first time after constructing a 20-play, 71-yard possession that occupied 13 minutes and 40 seconds across the third and fourth quarters. Kelly completed the drive from 39 yards to give Western Michigan a 9–7 advantage. Underwood’s late fumble then appeared to provide the visitors with an opportunity to end the game, but Michigan used its remaining timeouts to preserve enough time for another possession, although Kelly’s 33-yard field goal left the Wolverines needing a touchdown with only 35 seconds remaining.

Underwood began the final drive with consecutive incompletions before connecting with Buchanan for 28 yards. He then spiked the ball and launched the unsuccessful first Hail Mary which appeared to end the game. The sophomore quarterback completed 12 of 22 passes for 170 yards, one touchdown and one interception while leading Michigan with 47 rushing yards. His final throw transformed the result without resolving the problems evident during the preceding 59 minutes and 59 seconds.

Buchanan provided Michigan’s only consistent receiving threat, as the USC transfer caught six passes for 126 yards, including the two receptions that accounted for 75 yards during the decisive possession, but the Wolverines converted only three of 10 third downs, rushed for 106 yards and committed eight penalties costing 80 yards. They also punted six times following their opening touchdown.

Western Michigan, meanwhile, generated only 221 yards but repeatedly extended drives and prevented Michigan’s offense from establishing any rhythm. Broc Lowry completed 15 of 21 passes for 89 yards, while Jalen Buckley carried 19 times for 62. The Wolverines’ defense therefore supplied the foundation for the eventual escape, preventing Western Michigan from reaching the end zone despite the Broncos’ sustained advantage in possession and field position.

Whittingham might have begun his tenure with a victory, but the manner of it leaves substantial concerns before Oklahoma visits Ann Arbor next Saturday. The replay decision will dominate immediate discussion because it created the opportunity for Michigan’s winning play, and questions remain about the conflicting visual evidence available to viewers, but the more enduring issue for Michigan is what preceded that final second.

A team expected to contend within the Big Ten was outplayed for long periods by a MAC opponent, committed three turnovers and required an extraordinary catch to avoid beginning a new coaching era with one of the more embarrassing defeats in programme history. Whittingham now has six days to ensure Michigan does not require another great escape against considerably stronger opposition.