jack , the las vegas-based swede who fights under banner of floyd mayweather jr. 's promotion company , connected with a big one-two combination in the ninth round and forced the fight inside on a tiring dirrell -lrb- 27-1-1 -rrb- .
badou jack holds his belt after beating dirrell on friday night at the uic pavilion in chicago , illinois .
george groves will fight jack for wbc world super-middleweight title as he is mandatory challenger that