But it's another figure that continues to occupy his mind – his weight.
While his talent was undoubted, early in his career there were plenty of question marks over the lightly-framed player's ability to withstand the rigours of AFL football on a regular basis.
Entering his seventh season at the highest level, Simpson still isn't going to win any body-building contests, but he's comfortable with what he's been able to achieve in the gym.
"I'm still pretty small when you look at some of the other guys, but my body can at least cope with the game a bit better than early on," he says.
"It was pretty tough early. I'm probably following in 'Skinny' Lappin's footsteps a bit; it doesn't matter how many weights I do it's just hard to put on any weight.
"I wouldn't mind putting on another kilo or two and playing at around 77 or 78kg, but I'm comfortable at 75; it doesn't faze me too much any more.
"The game has changed a lot since I first started, but you still need that little bit of size. I'm pretty comfortable with where I've managed to get to."
And why not?
The 24-year-old has now played 87 games and is coming off one of his best seasons in the navy Blue that saw him play in every game and average 19 possessions per week.
Simpson's year was capped with another top-five finish in the Carlton best and fairest award and a spot in the Australian side for the International Rules series in which he was named his country's best player.
"To represent your country is a massive honour and it was good to meet a lot of those guys and see how they go about their football," Simpson recalls.
"It's just good to mix with players from other clubs because you don't often get the chance to do that and it is interesting because most clubs take a different approach.
"I got to spend time with some of the best athletes in our game and it was fascinating to be able to watch them do their stuff."
