James Anderson took four quick wickets to bowl South Africa out on the second morning at Trent Bridge and England appear to have escaped an injury concern over star allrounder Ben Stokes after a bizarre incident.
A strange and almost comical sequence left Stokes writhing in pain on the ground with his trousers nearly down to his knees in the second morning's fifth over.
The ginger-haired allrounder had dived to his right in the covers to save a run off Anderson's bowling and his slide on the grass had dropped his trousers.
The allrounder then tried to leap to his feet for a shy at the non-striker's stumps, but with movement his restricted by his lowered waistband, he managed only to look extremely awkward and appeared to suffer a side strain or rib injury from the effort.
Stokes clutched at his left side and remained on the turf, unconcerned his camoflauged boxer shorts were on display to the world as Stuart Broad and Anderson were first to check on him.
The allrounder tried to stretch it out and walk it off after some physio treatment as a concerned Joe Root looked on.
He later failed to score in 12 balls at the crease as he was caught behind by Quinton de Kock.
And England's vice-captain then allayed any injury fears by opting to bowl himself when captain while Joe Root was off the field for a short break.
Anderson took all of the Proteas remaining four wickets to bowl the visitors out for 335 on the second day of the second Test against England at Trent Bridge on Saturday.
Stokes was not required to bowl as Anderson dismantled the South Africans, who added just 26 runs in 6.2 overs before they were dismissed for 335.
Anderson's spell of four wickets for four runs in 16 balls meant South Africa were all out barely half an hour into the day's play.
England's all-time leading Test wicket-taker finished with overall figures of 5-72 in 23.2 overs – Anderson's 22nd haul of five or more wickets in a Test innings and seventh at Trent Bridge.
England lead the four-match series 1-0 after a 211-run victory in the first Test at Lord's last week.
It has been an eventful series for Stokes, who was poor with the ball on the first day of this second Test.
The New Zealand-born allrounder was caught up in the controversy surrounding South Africa fast bowler Kagiso Rabada's suspension from this Test. Stokes had been dismissed at Lord's when a pumped up Rabada's celebration included an obscenity that was picked up by the stump microphone and broadcast.
The International Cricket Council determined the broadcast of Rabada's direction for Stokes to "f*** off" warranted a code of conduct breach, which gave him a fourth demerit point this year, and triggered an automatic one-Test ban.
Stokes was then dismissed by Rabada again in the Lord's Test, prompting the pace bowler to celebrate with an index finger raised to his lips.
Stokes has a history of being involved in confrontations with opposition players.