Sights and sounds from the first round of the College Football Playoff

From Norman to College Station, Oxford to Eugene, the College Football Playoff is underway.

Like last year, first-round games will be held on the campuses of the higher-seeded team in each matchup, fostering authentic home atmospheres that are certain to be electric. Between a number of new entrants to the playoff and Oregon having had a first-round bye last season, each of the four stadiums where this weekend's games will be played will be hosting their first playoff games.

Though the weather might be cooler than usual, the crowds will surely be raucous. Here are all the top sights and sounds from the first round of the playoff.

Both squads make their entrances

🔒IN. #CFBPlayoff | #RollTide pic.twitter.com/qbsAkMrg9g

A wonderful Wein Time 🎄@TaylorWein | #BoomerSooner pic.twitter.com/eWG5vQN1xX

Sooner Nation's ready 🔥 pic.twitter.com/DqpbX8Tygi

Oklahoma fans sounding off

THE BOOMER SOONER CHANTS ARE ALIVE AND WELL 🗣️@PatMcAfeeShow pic.twitter.com/pRPiSxx1M7

Rece Davis' intro sets the stage

RECE DAVIS SETS THE STAGE FOR THE FIRST CFP GAME OF THE SEASON 🔥 @ReceDavis pic.twitter.com/9XfVvTRqXH

Alabama's threads

Gameday READY 🔥#CFBPlayoff | #RollTide pic.twitter.com/Xl2coHPBUb

Norman is ready to rock

Let the games begin... #CFBPlayoff pic.twitter.com/tJQEgOIyAp

"College GameDay" starting strong

Where does Santa fall in the newest mock draft? 🎅🤔 pic.twitter.com/klN0BZoIE9

Sooners have had the Crimson Tide's number lately 👀 pic.twitter.com/gWBSxnOPQW