Sri Lanka will also miss his wily slow left-arm bowling, which has yielded 273 wickets from his astonishing 357 matches since his debut in December 1989.

BBC: SPORT | Cricket | Sri Lanka suffering injury crisis

However, referee Steve Conroy ruled that the striker had led with the arm as he challenged McGregor to a miss-hit McGeady volley that flew high into the air.

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If Australia opt to use four seamers at the Waca, left-arm spinner Michael Beer is likely to miss out on his Test debut after he was drafted in to replace the ineffective Xavier Doherty in Australia's 12-man squad.

BBC: Ashes: Australia ponder four-man pace attack for Perth

These may be silent or cause only a few of the symptoms that come with a full-blown stroke - such as face or arm weakness and speech problems - and last just a few minutes, making them easy to miss.

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