Pietersen had also worn a knee brace in practice at various points during the series.

WSJ: Pietersen Quits Tour With Knee Injury

Griffin missed one game and returned to play three more while wearing a bulky knee brace, his mobility clearly hindered.

WSJ: Robert Griffin III: Surgery Reveals Damage to Washington Redskins Quarterback's ACL

Strapped into a thick knee brace, a battered blue ball cap yanked low on his head, the Finn chuffed along the baseline, chasing down balls with his choppy ground strokes.

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Boa Morte was taken to hospital with his knee in a brace and further tests will determine whether he needs surgery.

BBC: Boa Morte faces six-month lay-off

She has been practicing this week with a brace on her right knee.

WSJ: Harrison back for Lady Vols' NCAA tourney opener

Earlier this season, in a December 9 game against the Ravens, Griffin sprained his lateral collateral ligament, missed the following week and returned with an awkwardly fitted black brace wrapped around the knee.

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