The legend of underdog Tom Herman lives on.

The Texas Longhorns beat Oklahoma 48-45 as 7-point underdogs on Saturday thanks to a last-second field goal from kicker Cameron Dicker. It’s not the first Red River Rivalry upset, and it won’t be the last.

Using data from Bet Labs and KillerSports.com, we’ve found the 10 biggest upsets in Texas-Oklahoma games since 1980, and 2018 comes in at No. 7. The Longhorns have pulled off nine of the biggest upsets.

Granted, Texas has been a favorite in this game just 14 times in 39 years. Only twice has it been a double-digit favorite.

Herman is now 12-1 against the spread as an underdog since becoming Houston’s head coach in 2015.

Biggest Upsets in Texas-Oklahoma Rivalry

1996: Oklahoma 30, Texas 27

Spread: Texas -21

In the first year of the Big 12, Oklahoma was in shambles. The Sooners had their third coach in as many years. They entered the Red River Shootout 0-4 with losses to San Diego State, TCU, Tulsa and Kansas. Yuck.

Texas was having problems of its own, even with Rickie Williams in the backfield. It entered the year No. 8 in the country, but lost consecutive games to ranked Virginia and Notre Dame teams. Then, the unthinkable — the Longhorns lost as 21-point favorites, the biggest favorite they’ve been against Oklahoma since 1980.

That was the third biggest spread in series history.

1989: Texas 28, Oklahoma 24

Spread: Oklahoma -17.5

The first season in the post-Barry Switzer era could have gone better for Oklahoma.

The Sooners got as high as No. 6 in the AP Top 25 Poll before losing four of their last nine games, including this one to Texas.

The Longhorns were in a weird place at the time. The Fred Akers era ended poorly, and David McWilliams wound up winning 10 games in 1990. But in 1989, Texas was just 5-6.

2015: Texas 24, Oklahoma 17

Spread: Oklahoma -16.5

So much went wrong for Charlie Strong in Austin. Hell, he lost to Kansas the next year. But Strong pulled this big upset over Oklahoma, which earned him absolutely nothing in the eyes of the fanbase. Sorry, Charlie.

Texas held the No. 10 Sooners to 278 yards and Baker Mayfield to just 211 passing.

2013: Texas 36, Oklahoma 20

Spread: Oklahoma -12.5

Mack Brown went out a winner in this rivalry in 2013. In his final season, the Horns dominated No. 10 Oklahoma behind a strong effort from Case McCoy (not Colt, his little brother).

Strangely enough, Oklahoma would lose just one more game the rest of the season (at a really good Baylor team) and beat up No. 3 Alabama in the Sugar Bowl.

Texas finished 8-5 and got blown out by Oregon in the Alamo Bowl.

1992: Texas 34, Oklahoma 24

Spread: Oklahoma -10.5

Texas led this game 34-10 with eight minutes left in the fourth quarter, but a pair of Oklahoma touchdowns made this scoreline much closer.

The Longhorns had lost their first two games to Mississippi State and Syracuse, but then won five straight, including this one.