South Africa face an almighty dilemma over what to do with Jacques Kallis for the third Test against Australia starting on Friday.
Kallis batted on one leg for both innings in Adelaide but found a way to post crucial scores of 58 and 46 despite a hamstring injury which will rule him out of bowling regardless in Perth.
But if running quickly between the wickets becomes more of a priority in Perth then Kallis might find the going a bit tougher.
There's also the dilemma of picking someone who South Africa already know might have to spend extended stretches in the stands when the team fields.
Either Dean Elgar or Ryan McLaren would likely replace Kallis should he be ruled out.
Veteran batsman Mike Hussey doesn't expect Kallis to be passed fit and said it would be a massive psychological and competitive boost for Australia as they aim to steal the Proteas' No.1 world ranking.
"He's a freak that guy. He's on one leg and he still managed to nearly get 50 in both innings. And he just did it easily," Hussey said.
"I don't know where he's at. I'd say he'd be a big doubt for this last Test match, which is a big loss for them because he gives their team great balance being able to bowl and bat in the top-four. He's a great player. It would be a blow for them."
Proteas teammate Dale Steyn said the unusual scenario of having the ever-durable Kallis in doubt for a Test match was a sobering reminder of what life will be like when the champion 37-year-old allrounder retires.
"We know what he's capable of doing with the bat but with the ball he's just crucial for us," Steyn said.
"I don't know what we're going to do about him ... an injury like this puts an emphasis on how great a cricketer he really is.
"If he just misses one game it's massive but the day he retires it's going to be a whole different story."