Barcelona's Lionel Messi aims to score against Chelsea at ninth attempt
As unlikely as it sounds, Lionel Messi is still waiting to score his first goal against Chelsea after drawing a blank in eight previous Uefa Champions League matches.
The five-time World Player of the Year is likely to get another chance to break his duck this week and Chelsea manager Antonio Conte believes the past will count for little when Barcelona visit Stamford Bridge on Tuesday.
"I hope we maintain this tradition but we are speaking about a fantastic player," Conte said ahead of the last-16, first-leg game. "The most important thing is the present.
"We must have great respect but at the same time we must be excited to play this type of game and take on this type of challenge. It won't be easy because we know very well this player, we are talking about one of the best in the world."
The teams have produced some epic games in the past although they have not met in the Champions League since Chelsea pulled off a remarkable backs-to-the-wall semi-final victory over Barcelona on the way to winning the trophy in 2012.
Messi missed a penalty in the second leg at Camp Nou as the London club overcame the first-half dismissal of captain John Terry, and a 2-0 deficit, to draw the game 2-2 and secure an unforgettable 3-2 aggregate win.
Bayern Munich host Besiktas in Tuesday's other game while the following day sees Manchester United traveling to Sevilla, and Shakhtar Donetsk playing host to Roma.
Two weeks ago, the prospect of a Chelsea win over Barca would have been unthinkable after Conte's men had slumped to successive defeats by two of the Premier League's lesser lights.
The London club were still smarting from a 3-0 home loss against Bournemouth when they traveled to Watford and succumbed to an embarrassing 4-1 reverse.
Chelsea have got back on track since then, though, easing past West Bromwich Albion 3-0 in the league last Monday before swatting aside second-tier Hull City 4-0 in the FA Cup four days later.
Conte has several selection problems. He must choose between captain Gary Cahill and Antonio Rudiger for a place at the back, and between Alvaro Morata and Olivier Giroud up front.
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Cesc Fabregas will also be desperate to play against his former team but may have to settle for a spot on the bench.
Barca have lost only once in 38 matches this season since falling in the Spanish Super Cup to Real Madrid in August. Ernesto Valverde's side have a seven-point lead at the top of La Liga and have reached the final of the Copa del Rey.
Messi is having another stellar campaign, scoring 27 times in all competitions, and he helped set up two goals in Saturday's 2-0 win at Eibar.
Philippe Coutinho is ineligible for Barca following his move from Liverpool.