Another season of “The Ultimate Fighter” comes to an end on Saturday night as the 18th season of the UFC’s long-running reality show concludes at Mandalay Bay Events Center in Las Vegas. The main event sees “TUF 5″ winner Nate Diaz  return to the cage to take on fellow lightweight Gray Maynard  for a third time in a rivalry that dates all the way back to Season 5 of the show. Diaz (16-9 MMA, 11-7 UFC) submitted Maynard (11-2-1 MMA, 9-2-1 UFC) in the semifinal round of the show to move to the final, where he defeated Manny Gamburyan. More than two years later, the two contenders met again in a battle with championship implications.