DENVER – He didn’t know it would happen at UFC Fight Night 139, but Chan Sung Jung had a feeling he’d eventually cross paths with Yair Rodriguez inside the octagon. After original headliner Frankie Edgar fell off the card due to injury , Rodriguez (10-2 MMA, 6-1 UFC) agreed to fight Jung (14-4 MMA, 4-1 UFC) on short notice in Saturday’s featherweight main event, which takes place at Pepsi Center in Denver and airs on FS1 following early prelims on UFC Fight Pass. Jung’s matchup against Rodriguez will mark just his second UFC fight since August 2013. He’s been forced to watch the 145-pound division evolve in his absence, but has kept attentive to what’s been going on. “Pantera” has been on his radar, and that made the switch slightly easier