During his time in Stillwater, McArthur played on two Final Four teams, playing in the NCAA championship game in 1949 (a 46–36 loss to Kentucky) as a sophomore and the national semifinals as a senior in 1951.

[3] In that senior year of 1950–51, McArthur averaged 11.6 points per game and led the Aggies to a 29–6 record.

The team won the Missouri Valley Conference for the second time in McArthur's career.

However, McArthur opted for dental school instead, ultimately starting his own practice in Ponca City, Oklahoma.

This biographical article relating to a United States basketball player, coach, or other figure born in the 1920s is a stub.