What would a Michigan State victory be without a thrilling finish? The cardiac Spartans defeated previously unbeaten Iowa in Saturday night's Big Ten Championship Game, and thus displaced the Hawkeyes in the College Football Playoff. So the final four looks set. Here is what the national semifinals might look like when they are revealed at 11:45 a.m. Sunday on ESPN:

Star Tribune's playoff prediction

(1) Clemson (13-0)

Dec. 31 in Miami

(4) Oklahoma (11-1)

(2) Alabama (12-1)

Dec. 31 in Arlington, Texas

(3) Michigan St. (12-1)

Saturday's key results

Clemson 45, UNC 37

QB Deshaun Watson accounted for five TDs as the top-ranked Tigers won the ACC crown. C3

Alabama 29, Florida 15

Derrick Henry rushed 44 times for 189 yards and the Crimson Tide took the SEC championship. C3

Michigan State 16, Iowa 13

The Spartans overtook the Hawkeyes in the closing seconds after a 22-play, 82-yard TD drive that lasted nine minutes. C3

Division III playoffs: St. Thomas advanced to the national semis with a 38-7 victory over Wabash. C4

Detroit, here they come? Losing record and all, Gophers will know their bowl fate by midafternoon Sunday. C4

FCS playoffs: North Dakota State routed Montana 37-6. C4