The 15th ranked Wisconsin Badgers tuned up for the Big Ten tournament with a 70-56 victory over Illinois in the regular season home finale and senior day at the Kohl Center.   The Badgers jumped out to an 11-2 lead and held Illinois to 18 first half points.   Jordan Taylor and Josh Gasser led four Wisconsin players in double figures with 16 points each.   Bo Ryan tied Harold "Bud" Foster for the most wins in Wisconsin history with 265.   The Badgers finished 23-8 and 12-6 in the Big Ten and will be the fourth seed in the conference tournament this week.   Wisconsin will get a first round bye and play the winner of Indiana-Penn State on Friday in Indianapolis.