James Anderson is a doubt for England’s first Test against South Africa on Boxing Day after picking up a calf injury.
The fast bowler had a scan on Tuesday after feeling tightness and discomfort having bowled just five overs in the first tour game against an Invitation XI in Potchefstroom earlier this month.
The 33-year-old played no part in the final three-day warm-up against South Africa A, leaving him just two net sessions to get up to speed ahead of what would be his 111th Test appearance when the teams take to the field at Kingsmead, live on Sky Sports.
Head coach Trevor Bayliss said: "Unfortunately Jimmy`s had a little bit of a tight calf muscle. We`re just waiting on some test results there and hopefully we`ll know in the next day or two.
It`s a concern. 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."
Anderson has claimed 426 Test wickets during his career and overtook previous record-holder Sir Ian Botham during England`s tour of the Caribbean earlier this year.
During 2015, he has taken 46 wickets in 11 Tests but has a mediocre record on South African soil where his five Tests have yielded just 18 victims.
England coach Trevor Bayliss has plenty of options to choose from should Anderson not be passed fit in time for the first Test with Stuart Broad, Liam Plunkett, Steven Finn, Chris Jordan, Chris Woakes and uncapped left-armer Mark Footitt all available.
Meanwhile, South Africa have been handed a major boost ahead of the first Test as their most potent fast bowler, Dale Steyn, has been passed fit by the hosts.
Steyn, who missed the final three Tests of the recent tour of India, could overtake Shaun Pollock as South Africa`s all-time leading wicket-taker during the series.
Coverage of the first Test between South Africa and England in Durban gets underway at 7.30am on Boxing Day morning on Sky Sports 2, or watch without a contract on NOW TV
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