With Barcelona, Real Madrid and Schalke holding emphatic leads, Manchester United and Chelsea are likely to provide all the drama in the Champions League quarterfinals this week.
Chelsea heads to Premier League rival United just 1-0 down after the first leg, while Barcelona leads Shakhtar Donetsk 5-1, Real Madrid goes to Tottenham 4-0 up and Schalke has a 5-2 advantage over title-holder Inter Milan.
So while three European rivals delve into the history books to seek inspiration before trying to pull off near-unthinkable comebacks, Chelsea sees no reason that it can't oust United on Tuesday.
After all, Chelsea won 2-1 at Old Trafford last April on the way to winning the Premier League. A repeat result would take the London club through to the semifinals on away goals.