Click here for scorecard

Donald aggravated a hamstring strain while fielding during the third day in Barbados and spent much of the day off the field.

"Allan's got a tight and slightly sore right hamstring," said South African physiotherapist Craig Smith.

"As a precaution with a second innings still to come here and the fourth test in Antigua in a few days time, we don't want to make it worse.

"I said to him when he went out in the morning not to make it any worse and that if it did deteriorate it would be better just to sit this innings out or sit the day out. We're being a bit more cautious than normal."

Smith confirmed that the problem was bad enough to put Donald's fitness for the Antigua Test, which starts on Friday, in some doubt.

"I would consider him a concern because he might have to bowl in the second innings here," Smith said.

"We'll just have to play it by ear and see how it reacts on a day by day basis.

"We'll be doing a lot of treatment over the next two days. Hopefully it's more of a stiffness kind of soreness as opposed to a strain kind of soreness because he was able to move in the field without much discomfort."

Passed fit

Donald suffered the injury while ducking under a bouncer during his career-best innings of 37 on Friday and although the hamstring was stiff on Saturday morning, he was passed fit to bowl.

He made it through 12 overs before leaving the field shortly before captain Shaun Pollock took the second new ball.

West Indies closed the third day on 252 for five in their first innings, still three runs short of avoiding the follow-on.

Captain Carl Hooper was unbeaten on 74 and Ridley Jacobs 14 not out.