LAWRENCE, Kan. — There’s still a lot of basketball to be played before the men’s NCAA Tournament pairings are announced on Selection Sunday, March 13. Potential seeds figure to change as regular-season league races are decided and postseason conference tournaments are played. One sign of possible uncertainty to come occurred Saturday, when the top six teams in last week’s AP poll (Gonzaga, Arizona, Auburn, Purdue, Kansas, Kentucky) and seven of the top 10 all lost on the same day for the first time in poll history. The poll began in the 1948-49 season. “I don’t know that it really does much,” …