Benneteau, who like Federer is still competing at major tournaments aged 36, does not think his esteemed counterpart is overly fussed by his position in the ATP rankings.
Roger Federer has won nine titles in the last 13 months which include three Grand Slams to get back to world number one after over five years.
Federer recently leapfrogged Nadal to become the oldest number one in tennis history, and Annacone is delighted to see his former pupil savour "every little achievement".
Martina Hingis has spoken about Roger Federer's ability to still remain successful despite playing at 36 years of age.
Roger Federer went over four years without a major title between his win at the 2012 Wimbledon Championships and the 2017 Australian Open title.
Roger Federer has been hailed as the complete player by former opponent Rainer Schuettler after becoming the oldest world no.1 in tennis history.
Federer is certainly showing no signs of fear over retiring from the sport he has dominated for so long.
Federer is enjoying a remarkable twilight of his career and is still breaking records as he approaches his 37th birthday.
Mats Wilander believes Roger Federer's recent success along with his career resurgence from last year prove he is the best tennis player over Rafael Nadal.
Miles Maclagan believes the 20-time Grand Slam champion's ability to win matches early gives him a huge physical and psychological advantage.
Federer skipped the entire clay court swing of the season in 2017 including the French Open, but indicated that he will play a limited schedule this season.
The Spaniard returns for the first time since his Australian Open quarter-final withdrawal last month.
At the time Sampras had 13 career Grand Slams to his name and was heavy favourite to win Wimbledon that year.
Richard Krajicek had won the Rotterdam Open on two occasions in 1995 and 1997. Roger Federer has now surpassed the Dutchman to win the tournment three times.
Novak Djokovic's father revealed that he expects his son to return to action at the Madrid Masters in May.