Gilles Simon believes Andy Murray's inferior trophy haul means he cannot be grouped with tennis' 'Big Three' of Novak Djokovic, Rafael Nadal and Roger Federer.

Murray has enjoyed a long and stellar career, reaching 11 major finals and claiming three grand slam titles, as well as spending 41 weeks ranked as the world number one.

But with Djokovic, Nadal and Federer boasting 23, 22 and 20 grand slam successes respectively, Simon feels Murray is not quite on their level.

"He's not part of the Big Three," Simon told Stats Perform at the Roland-Garros eSeries by BNP Paribas. 

"You don't have to compare him with the Big Three, because he played at the very same time and we have the result.

"Andy was a fantastic player, just under these three guys in terms of level. In the end, the gap is huge in terms of titles: 23, 22 and 20, compared to three, so he's not part of the Big Four.

"He played at the same time as everyone and he has three and they have 20 or more. That's how I see it."

Simon – who won three of his 19 meetings with Murray before retiring in 2022 – feels the Scot was unfortunate to have competed with the 'Big Three' and would have been remembered as one of the game's greats in another era.

"He could have won 17 slams without the Big Three," Simon explained. "What is hard for Andy is to compare him to other players from other generations, when other players maybe have more slams than he has.

"If he had played at that time, he could maybe have had 15 and been one of the greatest. You cannot compare him with the Big Three, we saw it already, we saw the results.

"Where I feel sad for Andy is that if you play in a different era, you have 10 [grand slam titles] and then if we take the all-time rankings, we go to [Pete] Sampras with 14 and you say maybe he's here.

"This is where I feel it's a bit of an injustice for him compared to his level, because he would be closer to something like this than to someone who has three slams. He would be much higher in the all-time rankings."