SWAT teams fire tear gas at OSU fans celebrating National Championship win (VIDEO)

Chaos reigned in Columbus after Ohio State's football team defeated Oregon to win the national title in college football's first championship playoff series final.

Thousands of fans were seen reveling on crowded streets as police tried to keep order in the city gripped by celebrations after the 42-20 victory for the Buckeyes.

Police and SWAT teams dressed in full camouflage gear and Kevlar helmets were pictured using tear gas to disperse the crowds after earlier urging fans to show they "have class."

Thousands of fans cheering and blowing car horns converged on the university's stadium shortly after the win, only to be turned away by police. That forced them back to an area of bars around the campus where about 30 trash cans and dumpsters were set ablaze.

Crowds Riot, Tear Gas Thrown After #Buckeyes Championship Win, @MicheleWsyx6 reports - http://t.co/76xkYIhMBK pic.twitter.com/iAGKjaOgYd
— WSYX ABC 6 (@wsyx6) January 13, 2015

Social media blew up with fiery images including one of a man pouring fuel on to a sofa which sat burning in the middle of the street.

Photos of the streets showed SWAT teams marshaling crowds, and fires burning in the middle of intersections while patrol cars pushed through hundreds of celebrating fans.

OSU football team tramples cheerleader during title game intro (PHOTOS)

When all was said and done, the Ohio State football team had a way better finish than entrance at the National Championship Game against Oregon on Monday night — especially for one OSU cheerleader.

Usually, the Buckeyes race onto the field from the tunnel led by four students carrying large flags that spell out O-H-I-O. Before last night's, however, one of the flags got snagged on the ground, tripping a cheerleader and sending several players sprawling.  While the players did their best to avoid trampling the helpless rah-rah to death, the Spirit Squad was left missing an "O."

We spelled #OHIO wrong. Not a good start. Cmon Bucks!! #BucksNotDucks #UOvsOSU

A photo posted by Jason Zone Fisher (@jzfish) on Jan 12, 2015 at 5:26pm PST

Getty Images photographer Tom Pennington got three images of the pompom carnage and the heroic attempts of a male cheerleader who tried to help.

The horror... the horror.

Things ended up OK for everyone involved. Yay team!

Our Cheerleader is ok. Just a miscommunication with the team runout and the producers but everyone is ready for the second half !
— OSU Spirit Squad (@OSU_SpiritSquad) January 13, 2015