After kicking off his reign with a handsome victory at Lord’s, Root saw his team humbled at Trent Bridge where they were skittled for 133 in 44.2 overs for a 340-run defeat.
Doubts over opener Keaton Jennings and Root’s Yorkshire team-mate Gary Ballance are growing rather than receding with each innings, with the pair making 44 and 85 respectively in four knocks apiece.
Ballance’s crease-bound technique has been exposed again on his third coming as a Test batsman, while Jennings’ dismissal by Vernon Philander for three, was unedifying indeed.
Root provided some support for the pair in post-match presentation, but hinted their positions were not guaranteed for the Oval Test.
“No, I don’t think it (the top three) is a concern. They just need some runs and to spend some time out in the middle,” said Root.
“I’m sure if they get the opportunity to do that in the next game they will go on and make big scores. We’ll sit down with selection and make sure we’re happy with what we have going into the next one.”
Another player potentially looking over his shoulder is paceman Mark Wood.
The Durham player returned to the red-ball setup after a two-year injury-enforced absence at the start of this series but has managed just one wicket for 197 runs in two Tests.
Bowling coach Ottis Gibson suggested he had experienced some discomfort in his heel - not his troublesome ankle - but Root is hoping that issue does not develop.
“It’s been a tough week for Woody, really,” he said.
“He worked really hard throughout the game and was unfortunate not to pick up many wickets but I can’t fault his efforts, the way he’s gone about it.
“In terms of fitness he came throuh quite well, so hopefully he’s fit for selection for the next one.”