Carlo Ancelotti and Michael Ballack both admitted Chelsea have been working on defending dead-ball situations since Saturday's double blow at Aston Villa but bookmakers are not convinced Atletico Madrid will not also expose this fatal flaw.
The Blues conceded two goals from corners at Villa Park and are 9/2 with bet365 to let in another from a set-piece when the Spaniards visit Stamford Bridge in the Champions League.
“You wouldn’t expect Chelsea to have problems dealing with set-plays with the likes of Petr Cech, John Terry and Ricardo Carvalho in their side, but the stats don’t make good reading," said spokesman Steve Freeth.
Chelsea can, however, boast two straight clean sheets in Europe this season and are 8/11 with bet365 to hold firm at the back again here, while punters can get Evens for the visitors to break them down.
To be fair, Chelsea did look good going forward in the second half at the weekend and are 5/1 with the same firm to be the highest-scoring team in Wednesday night's Champions League fixtures.
“Some people thought it was a case of how far for Chelsea in the Premier League and Ancelotti is sure to have his troops wound up for Atletico Madrid after his side’s latest defeat on Saturday," added Freeth.
Juventus are 7/2 favourites with bet365 for this market, with Porto and Wolfsburg both 9/2, Real Madrid 11/2 and Manchester United as big as 16/1.
Coral are offering 9/4 that the Red Devils hit the back of the net more times at CSKA Moscow than the Blues do at home, with Chelsea 4/5 for this mythical match bet and a tie 3/1.
It is 7/4 with the Barking firm for the game in Russia to produce more goals overall, 11/10 for the London scoreboard to be busier and 3/1 a tie here.
Sky Bet are offering 15/8 for both English sides to win and maintain their 100 per cent records in this season's group stage.