EVANSTON, Ill. — Justin Fields threw for four touchdowns, J.K. Dobbins rushed for 121 yards and No. 4 Ohio State pounded Northwestern 52-3 on Friday night.

The Buckeyes (7-0, 4-0 Big Ten) did exactly as expected and blew the game open early, jumping to a 31-3 halftime lead.

Fields completed 18 of 23 passes for 194 yards. The sophomore transfer from Georgia matched his career high for TDs through the air. He now has 22 passing and 30 overall on the season.

The nation’s second-leading rusher, Dobbins scored from the 5 in the second quarter after breaking off a 67-yard run. He also caught a 19-yard touchdown pass in the first half.