On Monday night, he produced the workrate to go with his goals output, harrying the Manchester City defence at every opportunity as the visitors tried to protect their two-goal advantage, then working tirelessly in a more orthodox midfield role once Victor Anichebe had been dismissed.
"Tim's energy levels looked back to the old days," observed Moyes.
"There had been signs he had maybe dipped down a little bit but he showed great energy, and we needed him to.
"He did a great job when we were at 10 men and even when we had 11. He epitomised what we are about.
"He was the one who kept taking the fight to Manchester City."