[2] In October 1930, he scored a touchdown to give Kiski a 7–0 win over the Penn State freshman football team.

Crisler called sophomores Tom Harmon and Kromer "the finest halfbacking combination he has ever coached.

"[7] The backfield duo of Kromer and Harmon gave the Michigan offense a spark in 1938, as the two became known as the "Touchdown Twins."

The Michigan Alumnus in November 1940 recalled the efforts of Kromer and Harmon: "In that season of two years ago two boys flashed brilliantly across the gridiron horizon.

Tom Harmon and Paul Kromer, Sophomores, halfbacks, teamed to give to Michigan the promise of the greatest backfield combination in football history.

His departure led to speculation in the national media that he was leaving the Michigan football team, but he returned in late November and said he had gone home to get some money from his parents.

[10][11][12] Kromer announced in the spring of 1940 that he intended to retire from active competition due to the knee injury he sustained in the 1939 season opener.

[14] The Michigan Alumnus described Kromer's run as follows: "He grabbed Scott's fine punt on his own 20-yard line, feinted to the left and then cut over toward the center of the field.

Though lacking about fifty percent of his old speed and agility, Kromer sped down the side of the field and over for the score — the climax of his Varsity career.

[19][20][21] At the end of August 1943, Lions head coach Gus Dorais placed Kromer on the team's reserve squad.