Top UK bookmaker Bet365 are offering odds on whether either team will need a penalty shootout to progress to the Champions League final.
Liverpool are 20/1 with bet365 to repeat last season's heroics and defeat Chelsea in a Champions League semi-final on penalties.
bet365 spokesman Steve Freeth said: "Liverpool have failed again in the Premiership, but Rafa Benitez takes some shifting in the Champions League. We're shorter on a Liverpool victory if it does go to spot-kicks as Pepe Reina is one of the best in the business at keeping them out from 12 yards."
Chelsea are at 29.00 (28/1) to go through on penalties themselves.
Meanwhile punters have latched onto a Liverpool win in the first leg on Tuesday after it was confirmed Reds skipper Steven Gerrard was fit to play.
The Gerrard news has acted like a catalyst for punters who are piling on Liverpool.
RELATED LINKS :
GoonersGuide.com preview on Liverpool v Chelsea first leg.
BookieLabRat.com Live Odds page for the UEFA Champions League.