The most impressed I've been with Billy Slater didn't involve him wearing boots or holding a footy in his hands.
He was fighting a mental battle, trying to convince himself at 32, 33 years of age that he could come back from his second shoulder reconstruction in less than a year, taking on yet another painful and lengthy rehab.
There would've been a voice in his head telling him to give it away. 'Mate, you've done a fair bit in your career. Is there any point putting in all this hard work when you might not get back on the field anyway?'
To face that challenge with no guarantee that your shoulder's going to be strong enough for you to play again? I reckon 70 per cent of players would've said straightaway, 'No, that's not worth it'.
Of the other 30 per cent, some might've gone through the process but perhaps without the full effort, because it's such a big ask. But that's not Billy. He's different.
What he did to not only get back on the field but be successful again summed up the person he is.
Incredibly determined. Extremely competitive. Tremendously strong in his character.
