Jonathan Trott is doubtful for the final one-day international against South Africa following the hand injury he sustained from Dale Steyn at Lord's on Sunday although x-rays have ruled out a major facture.

Trott took a blow on his right hand early in his innings of 48 and was in clear pain throughout the rest of his stay in the middle and had two visits from the physio.

An ECB statement said: "X-rays of the hand rule out any major fracture, further medical assessment will be required tomorrow."

If Trott is ruled out of the Trent Bridge match it will mean a likely recall for Jonny Bairstow who is the spare batsman in the squad. He has been unfortunate not to find a place in the starting XI during the series following his successful return to the Test side at Lord's, where he made 95 and 54, plus his impressive unbeaten 68 in the Friends Life t20 semi-final against Sussex.

England have opted to stick with Ravi Bopara despitehis problems with the bat where his series scores are 16, 0 and 6. Bopara, though, has bowled well and took 2 for 34 at Lord's. As yet, England have not drafted any cover into the squad.

Trott has been the anchor of England's batting during their two victories in the series which have given them an unbeatable 2-1 lead and ensured they will retain the No. 1 ranking going into 2013. He made 71 at The Oval and 48 at Lord's, forming crucial partnerships with the more aggressive Eoin Morgan and Ian Bell.

Trott's stability at No. 3 has also helped compensate for the lean time of Alastair Cook who has yet to post a significant score in the series. Trott has been in early in all three completed matches with England having opening stands of 0, 14 and 2.