"He sets a high standard and he's not happy when he's an eight out of 10 so this week I could just see it in his body language that he was very determined to make sure that he led the way. And with his carries today and obviously that defensive effort on Timmy Lafai epitomises what Roger's all about."
Tuivasa-Sheck downplayed his defensive stop but admitted he had made a personal commitment this week to improve his own preparation and play.
"I just tried to get my hand underneath the ball and took a dip at it and it worked out in my favour," said Tuivasa-Sheck.
"I just had to take it a bit personally and come out and make sure I had myself ready to go.
"Too many times I'd try and get the team up and pumping but I think I forgot about my own performance and preparation and that's what today was about - to get myself ready to go.
"I was really pleased I was able to go back to a few of my things back in that first half and now I just need to bring it in the second half."
Tuivasa-Sheck brushed off a query about how he was enjoying fatherhood after Kearney had noted midweek how his home life had undergone significant change since his fiancée Ashley Walker gave birth to their baby daughter in June.
"No I enjoy it all," he said. "I'm loving it all and am keen to get back home to her so there's nothing too much there."
Kearney laughed as he clarified his comments in the lead-up to the match, saying: "The point I made was like all of us who do have children, it is an adjustment. I don't like to use the word 'shock' but it is an adjustment and when your job is what Roger's is every week it takes a bit to balance all of that out."