By Doug Vazquez,Alan Siegel Best bets and analysis for UFC 273, headlined by betting favorite Alexander Volkanovski against “The Korean Zombie” Chan Sung Jung. UFC returns to Jacksonville, Fla., where the promotion held the first major indoor sporting event with a full crowd since the start of the pandemic with UFC 261 in April 2021. The UFC 273 card is a little more stacked than that card, though. In the main event, featherweight champ Alexander Volkanovski (-800) is the biggest favorite on the card and aims to extend his UFC undefeated streak to 11. The cards features a fight that would be t…