England paceman Jofra Archer staked his claim for a recall for the final Test against South Africa with an impressive showing in the nets on Wednesday.
An elbow injury kept Archer out of victories at Newlands and St George's Park that have given the tourists a 2-1 lead with one match to play at the Wanderers.
The quick could come back into the side in Johannesburg on Friday after catching the eye in practice, while England are monitoring Mark Wood after he played his first Test for 11 months in Port Elizabeth.
England assistant coach Graham Thorpe told talkSPORT: "Jofra had good rhythm and bowled nice and quick today.
"That's where we want Jof to be. He looks good, but he will have to come in again tomorrow and back it up.
"The elbow problem has been a big issue for him. You can't force that, you have to wait for the player to be confident with it.
"Mark Wood hasn't played back-to-back Test matches for a while, but he bowled exceptionally well for us in Port Elizabeth. He bowled at high speeds of 90mph plus and gave us an X-factor. We'll have to see how he is and I'm sure Woody will be really honest with us.
"Historically, it's a pitch which has good carry and pace and generally starts softer then quickens up. It has that carry which bowlers, batters and spinners alike enjoy.
"It would be tough if [spinner Dom] Bess didn't play this Test. He has done himself no harm, though, in the way he has come into the set-up and the way he's bowled.
"He's progressed from the last time I saw him about six months ago and when you perform it gives you confidence. So we won't rush straight into a decision, it'll be nice to have all those options on the table."