The Oklahoma State men's basketball team moved up to No. 15 in the weekly AP college basketball poll.
The Cowboys, undefeated at 5-0, are coming off an 81-58 victory over Portland State on Sunday.
Indiana is still No. 1 in the poll. The holiday weekend tournaments caused a lot of change below.
Duke moved up to take Louisville's old spot at No. 2 after beating the Cardinals in the championship game of the Battle 4 Atlantis. Michigan moved up one place to third.
Oklahoma State's, which moved up from No. 20, travels to Blacksburg, Va., on Saturday to take on Virginia Tech.
There were four newcomers to the Top 25 on Monday, all ranked in the last five: Georgetown, Minnesota, Illinois and New Mexico.
Indiana received 47 first-place votes from the 65-member national media panel, 29 more than Duke, which jumped three places.
Ohio State, Louisville, Syracuse, Florida, Kentucky, Arizona and Kansas round out the Top 10. The teams that dropped out were UCLA, which was 11th, and Memphis, both of which lost two games last week. Connecticut and Baylor fell out after losing once.