Demetrius Jackson scored 20 points and the third-seeded Irish dominated Wichita State 81-70 in the Midwest regional semifinals on Thursday night to advance to the Elite Eight for the first time in 36 years. The Irish (32-5) shot 75 percent (18 of 24) in the second half, easily pulling away from the seventh-seeded Shockers (30-5) after Wichita State took its first and only lead on a layup by Darius Carter early in the second half.