James Anderson an injury doubt for first England v SA Test
England pace bowler James Anderson is a doubt for the first Test against South Africa starting on 26 December.

Anderson, England's leading wicket-taker in Tests, was sent for scans on Tuesday after suffering tightness in his right calf muscle.

A decision on his involvement in the first Test in Durban is unlikely to be taken until Thursday.

"It's a concern," said coach Trevor Bayliss ahead of the four-match series against the top-ranked Test side.

"He hasn't been able to bowl a lot of overs on this tour. He has bowled overs, though, so whatever it is it's not a terribly bad one."

The 33-year-old Anderson was rested for England's victory over South Africa A in their final warm-up game.

Having experienced soreness in his calf since the start of the tour, he has bowled only five overs, in a 13-a-side match against a South Africa Invitational XI last week.

Anderson, with 426 wickets in 110 Tests, missed the final two Tests of England's Ashes triumph over Australia this summer with a side strain.

If Anderson is ruled out, England could turn to Chris Woakes, Steven Finn, Chris Jordan or Mark Footitt to join Stuart Broad in the pace attack.