Aleksandar Rakic enters his heavyweight debut as a clear favourite against Marcin Tybura at UFC Belgrade, but the move up 60 pounds creates a major variable in a fight built around size, pace and wrestling. The bout is set for Saturday, August 1, at Belgrade Arena in Belgrade, Serbia, on the main card of UFC Fight Night: Medic vs. Rodriguez. UFC Belgrade Odds: Aleksandar Rakic vs. Marcin TyburaRakic, 34, brings a 14-6 professional record and makes his first UFC appearance at heavyweight after competing for years at light heavyweight. A Tybura submission or late TKO is the upset angle, but Rakic by points is the more balanced call. Given Rakic is coming off a four-fight losing streak, including a recent knockout loss, plus moving up to heavyweight for the first time in the UFC, Tybura may be a wise pick, especially as an underdog.