SOUTH BEND—Ben Hansbrough’s assignment was to slow down the NCAA’s leading scorer and make sure UConn’s Kemba Walker didn’t take over the game.Mission accomplished.Hansbrough led Notre Dame with 21 points Tuesday night and helped hold Walker to 19 — shy of his head-turning 26.7 average — as the 14th-ranked Irish stayed unbeaten at home by holding off the eighth-ranked Huskies 73-70.Walker had his streak of 11 straight games with at least 20 points stopped.He was 8-for-23 shooting, including 0 for 5 on 3-pointers.It wasn’t as much Hansbrough as it was his shot just not falling.Tim Abromaitis, who missed three free throws in the final 19 seconds, added 19 points for the Irish (13-2, 2-1), who were without starting forward Carleton Scott because of a hamstring injury. Notre Dame is 10-0 at home this season.