The field is set for the 2020 MGM Resorts Main Event in Las Vegas, according to a report.
CBS Sports college basketball insider Jon Rothstein reported Friday that Arkansas, Louisville, San Francisco and Colorado State will headline the event, which is scheduled for Nov. 20-22.
The Cardinals and Razorbacks were previously confirmed participants, but the final two teams were unknown. Each team will play two games.
Matchups in the event have not been announced.
Arkansas last played in Las Vegas during the 2012-13 season under former coach Mike Anderson.