World Cup: Frank Lampard ruled out of England's clash with San Marino

Chelsea midfielder Frank Lampard has been ruled out of England's World Cup qualifier against San Marino at Wembley tonight.

The Blues star had been struggling with a knee injury ahead of the Group H encounter and has now returned to the Stamford Bridge side for further treatment.

Chelsea team-mate Ryan Bertrand has also been ruled out as he is suffering from a sore throat which has not improved sufficiently.

The duo are scheduled to re-join Roy Hodgson's party at the weekend for a further check-up to see if they are fit to feature in Tuesday's testing clash against Poland in Warsaw.

"Frank had a scan earlier in the week and tried to train apart from the team but do a bit more on Wednesday morning, and he still felt a slight problem with his calf," said Hodgson.

"It was re-scanned and they found a few fibres where there's been a slight tear. It's not a major problem but it was decided the best thing is to let him go back to his club to get treatment on a daily basis there, and we'll re-assess on Sunday.

"When Ryan Bertrand fell ill we were hoping it would just be one of those 24-hour things but it's turned out to be a bit more of a serious illness than that. It is purely illness and again, we hope to recover him on Sunday along with

Frank."