It’s impossible not to sense a sadistic streak in the 23-year-old Rory MacDonald (14-1 MMA, 5-1 UFC) as he speaks about his upcoming fight with Jake Ellenberger (29-6 MMA, 8-2 UFC) at UFC on FOX 8. MacDonald insists it’s not personal when he said he sometimes feels the need to hurt someone badly in the cage. He said he won’t know whether he’ll try to do that to Ellenberger until the night of July 27, when they meet in the fight card’s co-main event at KeyArena in Seattle. Yet MacDonald said the last guy to talk trash to him – before Ellenberger decided to berate him on Twitter and in interviews – took more abuse than he might have taken had he elected to keep pre-fight interviews respectful. “The B.J. fight, I was having fun just beating on him,” MacDonald told MMAjunkie.com (www.mmajunkie.com)