An athlete has drowned while competing in a CrossFit Games event, with the devastating death playing out a short paddle from the finish line in front of cameras, cheering fans and clueless officials. Lazar Dukic, a 28-year-old Serbian athlete, was competing Thursday at Marine Creek Lake in Fort Worth, Texas, where the games were being held. Dukic was approaching land and a finish line set up on the shore when he appeared to begin struggling. “It was pretty devastating,” visiting Canadian athlete Cole Learn told KXAS-TV. “We were watching the athletes come in from their swim, and for some reaso…