Roger Federer hasn't prioritised finishing no.1 in the world
Federer, 36, handed Rafael Nadal the year-end no.1 spot on a plate last night after withdrawing from Paris.
It means the Spaniard needs just one more win to wrap up the honour of finishing top of the world.
Federer's withdrawal came hours after winning the Swiss Indoors for a record eighth time in his hometown of Basel.
But Sky Sports commentator Petchey says the Swiss legend was always going to pull out of this week's tournament.
Roger Federer v Rafael Nadal rivalry in Grand Slam finals
Sun, October 15, 2017
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He said: "I never felt like Roger was coming to Paris to be honest.
"He's chased the no.1 at times this year and it didn't work out for him but at the end of the day, as much as it is a massive achievement for Rafa or anyone who has ever done it, it's not really one that people talk about to be honest.
"Sampras' six consecutive career-end no.1s is a personal highlight for him but it's not how people remember the Great America.
"They remember him for his major triumphs, his Wimbledon titles, that feels to me a bit like at the bottom end of the great achievements they've obviously had."