Were you bored during a sleepy first Saturday afternoon of college football? BYU solved all of your problems.

BYU beat Nebraska on a 42-yard Hail Mary from backup quarterback Matt Saracen Tanner Mangum to Mitch Matthews as time expired late Saturday afternoon, spoiling Mike Riley's coaching debut in Lincoln with a 33-28 win for the Cougars that may have been scripted in advance by the Friday Night Lights writers' room.

It was an exhilarating, satisfying ending for BYU, but unfortunately Mangum's big moment came as a result of bad news.

In his return from a season-ending injury in 2014, star BYU quarterback Taysom Hill had been dominating the Nebraska defense at times, completing 21 of 34 for 268 yards and three touchdowns and rushing for 72 yards. But he suffered a Lisfranc injury to his foot and was ultimately forced to leave the game, opening the door for Mangum -- a highly touted recruit who returned from a mission this summer -- who hit 7 of 12 passes for 111 yards, including the game-winning touchdown on a prayer.

That means Hill will miss most of two seasons in a row, with Mangum -- considered the future of the program -- set to move into the starting role earlier than expected.

BYU opened up a 24-14 lead going into halftime, but the Cornhuskers mounted a comeback and appeared to control the game, thanks to two third-quarter touchdowns. It wasn't enough, with Nebraska suffering a reversal of fortune from just two years ago in a Hail Mary win over Northwestern in 2013:

The injury to Hill puts a damper on the situation, but BYU gets a huge opening win with a tough schedule continuing throughout September, while Riley's Nebraska career opens at 0-1. It leaves one to wonder how Bo Pelini -- who lost his Youngstown State debut to Pitt on Saturday -- felt about his former employer.

If you're a BYU player, then the reaction is just find the nearest person to hug.

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Contact Matt at matt.brown5082@gmail.com and follow him on Twitter @MattBrownCFB and Facebook.