World No. 1 Rafael Nadal is three majors shy of equaling Roger Federer's all-time record of 20 Grand Slam titles.
Severin Lüthi, Federer's long-time coach says the second-ranked Swiss is relaxed about the Grand Slam race.
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“I think that ultimately you have to look at you," Lüthi told Swiss newspaper Tages-Anzeiger. “And Roger is incredibly relaxed in this regard.
"He does not say: Nadal may not win, otherwise he will come closer to me ... Such emotions and feelings would not help either."
The 32-year-old Nadal is seeking to defend a hard-court major title for the first time at next month's US Open.
If Federer wins his first US Open crown since 2008 when he claimed his fifth straight Flushing Meadows major, it would mark the seventh time the Swiss won two or more Grand Slam titles in a single season.
Lüthi shot down suggestions Federer was nursing an injury during his Wimbledon loss to Kevin Anderson.
"There were no problems, there is nothing, all good," Lüthi said of Federer's health and fitness.
The coach also said he was not surprised former No. 1 Novak Djokovic rebounded to win Wimbledon.
"It was always clear to me that he would come again," Lüthi said. "You simply did not know exactly when."
Photo credit: Davis Cup Facebook