McEvoy misses out on 50m final

Australian Cameron McEvoy has missed the cut for the 50m freestyle final at the Rio Olympics.

McEvoy finished seventh in his semi-final, clocking the 11th-fastest time of all semi-finalists.

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The Australian failed to rebound from his disappointing seventh in the 100m freestyle final on Thursday, clocking 21.89 seconds in his semi - 0.57s behind the quickest-qualifier.

The event was considered a chance for redemption for McEvoy after going into the 100m final as favourite but finishing seventh.

McEvoy suffered stage fright in his Olympic freestyle flop, Australian swimming's head coach says.

"It looked like he was frozen ... how do you call it, stage fright," coach Jacco Verhaeren said.

"It had nothing to do with any physical, technical, tactical choices whatsoever.

"He just wasn't there at the right time. And that is mental. And what part of mental we have to find out."

McEvoy refused to make any excuses for his unexpected failures.

"I don't want to stand here being the guy rolling off excuses, it was this or it was that," McEvoy said.