The de Villiers-led side slumped to a 1-2 defeat to England in the three-match ODI series after two closes match went the hosts' way while they were humbled in the final game.
"And it is a worry when he goes off the field and can't come back on and bowl". He would definitely be a loss if he couldn't play.
Hales' opening partner Roy just can not get started.
An unbeaten 133 by a cramping Joe Root, a 95 by opener Alex Hales, and an unbeaten 75 by captain Eoin Morgan paced an aggressive England to what, in the end, was a comfortable win in sunny conditions.
"Hopefully it is more cramp and me being a bit wet", said Root, the man-of-the-match, at the presentation ceremony.
The day had started badly for England when allrounder Chris Woakes limped off due to a side strain after bowling two overs.
He had played 41 of England's previous 44 one-day internationals leading up to the Champions Trophy, so it was unusual when Eoin Morgan said they had made a horses-for-courses choice.
"You know, when one of your main bowlers can only bowl two overs, it's asking a lot of the rest of the team to be able to stem the flow".
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He took the attitude that, "I just find ways to get into the lane, to get in transition, to back off and shoot the jumper". Can you imagine? LeBron was looking for the demonstrative, we-are-back play, right there, and he muffed it. "No blame.
With around seven an over needed from the final 10 overs, England kicked on with Morgan (75no from 61 balls) twice clearing the ropes and Root, hobbling slightly after rolling his ankle, going through to three figures. I can see why Morgan said what he said on Wednesday, backing Roy ahead of Jonny Bairstow because he wants to alleviate the pressure from his players.
Root joined Hales in the third over after the out-of-form Jason Roy was out for 1.
Woakes, who came into the match following a thigh problem and could now be replaced by next-in-line Steven Finn if this side strain proves serious, was not the only injury worry for England, with Root hobbling during his 10th one-day global century.
For his trouble, though, Root was noticeably inconvenienced by a sore right leg, although it is Chris Woakes' side strain, a notoriously awkward injury for any pace bowler, which is likely to be most significant as England plot the remainder of their campaign.
"Personally, I think that's unlikely", he said. But that sort of stuff can happen.
"When you get to the stage where you're missing test matches to play in IPL that sends out a very strong message about where your priorities are and I would be uncomfortable with that". "We (still) believe in him".
Bangladesh captain Mashrafe Mortaza, on the other hand, revealed that he too had considered to bowl, had he won the toss. He's not played white-ball cricket for England for over a year, but the possible absence of Woakes deprives Morgan of experience in his attack, and we saw how Jake Ball found it tough in his first major tournament.
Liam Plunkett got rid Tamim and Mushfiqur in the 45th over.