England will have Graeme Swann available as they look to secure a place in the knockout stages of the Champions Trophy by beating Sri Lanka at The Oval.
After the clash between New Zealand and Australia was abandoned due to rain today, England can guarantee a semi-final final berth with victory over Angelo Mathews' side.
The hosts’ triumph over Australia on Saturday came without Swann, who was suffering from a back problem.
Yet the Nottinghamshire off-spinner trained with his team-mates this morning and has been declared ready to return.
"Swanny is fit," confirmed England skipper Alastair Cook in his pre-match press conference.
"His injury was a strange one. He must have jarred his back in training and woke up with a stiff back the next day.
"That can happen but at the moment he is back and available for selection."
Cook is confident his team are back on track, having responded to two losses at the hands of New Zealand with victory over the Black Caps at Trent Bridge and a comprehensive triumph against Australia.
"The win against Australia was a good one, as was the last one against New Zealand," added Cook.
"The first two games against New Zealand (which saw England beaten at Lord's and at the Ageas Bowl), seem to be out of the way.
"We seem to have recovered a bit of form and confidence now.
"It's a vitally important game tomorrow; we can make a really big stride towards the semi-finals if we win."
Sri Lanka’s principal threat is likely to be Lasith Malinga, whose ability to bowl yorkers, at varying pace, has often bamboozled batsmen around the world.
The 29-year-old seamer took four wickets during Sri Lanka's narrow defeat to New Zealand in their opening game, but Cook is sure England can handle him.
"Malinga has improved that slower ball and he has looked dangerous," Cook said.
"It's something we have to be aware of and we have looked at footage of it.
"If you get used to facing him you can get in to a rhythm. If we can play him well as a unit it can really put Sri Lanka under some pressure."