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England seamer James Anderson is on track to play in the second Test against South Africa in Cape Town.
Anderson was ruled out of the series opener in Durban due to a calf strain that has been troubling him since the start of the trip.
But England have been easing their record wicket-taker back into action over the course of the past week, with Anderson sending down regular spells in the nets.
On Wednesday morning the 32-year-old sent down the equivalent of six overs in the middle, watched by bowling coach Ottis Gibson, and got through the session without any concerns.
England fly to Cape Town on Thursday, with the Test starting on January 2.