LAS VEGAS – Darren Stewart entered UFC on ESPN+ 32 with a heavy heart, but he still picked up a victory. Stewart (12-5 MMA, 5-1 UFC) defeated Maki Pitolo with a first-round submission Saturday. In doing so, he didn’t forget the memory of a friend, Jahreau Shepherd – a fellow MMA fighter, who was killed July 11 when celebrating his 30th birthday . “I feel like the anger and emotion kind of slowed me down a bit,” Stewart said during his post-fight news conference. “Everyone said I performed well. I need to watch it back