USC defeated Penn State 52-49 in an instant classic on Monday night. 

With 27 seconds to go the Trojans intercepted the ball, helping to set up Matt Boermeester for a game-winning field goal. The kicker, who was 2-for-4 in field goal attempts before the final kick, nailed a 46-yard field goal to secure the Rose Bowl victory. 

RELATED: Final stats | Live blog 

Check out some reactions below to the thrilling game: 

It ended like it started for PSU:
•First 4 drives: Int, Int, Punt, Punt
•Next 7: TD, TD, TD, TD, TD, TD, TD
•Last 4: Punt, Punt, Punt, Int pic.twitter.com/TF5cnpfzXd

— SportsCenter (@SportsCenter) January 3, 2017

USC Trojans 2017 Rose Bowl Champions. pic.twitter.com/Fh17yzDqem

— Arash Markazi (@ArashMarkazi) January 3, 2017

Adoree' Jackson limping but still going into the stands to greet fans. pic.twitter.com/OcJ2qRMjVw

— Arash Markazi (@ArashMarkazi) January 3, 2017

USC's Zach Banner was emotional after the Trojans' Rose Bowl victory. https://t.co/IO9de4frop

— ESPN CollegeFootball (@ESPNCFB) January 3, 2017

.@USC_Athletics head coach Clay Helton says his team DEFINES #FightOn.

We'd have to agree.https://t.co/ZLABag9Ytthttps://t.co/gapEv1m6lE

— Pac-12 Network (@Pac12Network) January 3, 2017

Shout out to my @USC_Athletics for winning the Rose Bowl! #FightOn

— Lisa Leslie (@LisaLeslie) January 3, 2017

This Rose Bowl so good it should be called the Final Rose bowl.

— Jane McManus (@janesports) January 3, 2017

Sam Darnold is only 19 years old

Here he is with @imkateharrison after tonight's Rose Bowl win! pic.twitter.com/FwI4LfiAWa

— Pac-12 Network (@Pac12Network) January 3, 2017

ROSE BOWL WE DID THAT!!!! pic.twitter.com/KaUPG686kX

— Juju Smith Schuster (@TEAM_JUJU9) January 3, 2017

The Granddaddy of them all. pic.twitter.com/M5KDe7hdFt

— NCAA Football (@NCAAFootball) January 3, 2017

That all-timer was the first Rose Bowl with a last-minute winning score since the Texas-USC title game.

Trojans fans enjoyed this one more. pic.twitter.com/pChnKlmYQB

— ESPN (@espn) January 3, 2017