Gonzaga and UCLA continue their hold on the top two spots in The Associated Press Top 25 college basketball poll, setting the stage for their highly anticipated showdown this week. Purdue also received a first-place vote to leap past Kansas into third, with the Jayhawks and Duke rounding out the first five. Purdue and Baylor moved up three spots within the top 10, and Alabama moved up four spots to forge a tie with SEC rival Kentucky. The biggest drop came with Michigan, which was fourth before a pair of losses sent coach Juwan Howard’s crew tumbling all the way to No. 20. Arizona, Seton Hall, BYU and Xavier entered the poll this week.