Creighton’s players all know the deal, as do their coaches, fans, and opponents. The game can be played to a dead heat for 30-35 minutes, and then it happens — the Jays find that gear and go on a run that completely changes the complexion of the contest. Greg McDermott’s teams have done it to Nebraska before, and Friday night he added another chapter to it as his team reeled off a 23-2 spurt over the span of four minutes and 58 seconds of game time. That spurt expanded a four-point, second-half lead to a 25-point advantage on their way to a 98-74 win over their in-state rivals at the CHI Health Center.