'Whether it will happen or not, I'm not so sure.
The world No 1 broke late in the first set before serving for victory - and he followed suit in the second to win by the same score.
The world number four was easily dismissed in straight sets when he faced Nadal in the last four at the French Open last month, and the manner of that brutal defeat may play on his mind in the opening stages of this meeting.
Del Potro leads Simon 7-6 (1), 7-6 (5), 5-7, 0-0.
In the men's draw, world No.2 Federer was similarly in ruthless form, dismantling Adrian Mannarino 6-0 7-5 6-4. Milos Raonic is playing up to his No. 13 seed, and he'll go up against American John Isner. "I've often said the day that you don't feel nervous is the day you should be more anxious about".
A glimpse of the potential that has seen Khachanov's reputation grow came in the first game as a superb cross-court forehand helped him break.
These are the semi-final matchups at the FIFA World Cup (SCHEDULE)
Five days ago we told you how there was a petition to make Monday July 16th a bank holiday if England end 52 years of hurt and win the World Cup for the second time.
"It was crucial for him to stay in the match at the beginning of the second set and then it got tougher", said 20-time major victor Federer.
Tendulkar has confessed on many occasions that he is a fan of Federer and is a regular at the All England Club when The Championships are held.
While Nadal, who has lost his last five encounters against Federer with four of them coming in 2017, would be excited about a meeting with the Swiss legend, he also would prefer to face anyone else to better his chances of a third Wimbledon title.
It will be Djokovic's 41st appearance in a Grand Slam quarterfinal and he will start favorite against Nishikori who will be in his first last-eight at the All England Club. Thereafter it was Federer's familiar playground as he rattled off ridiculously easy wins over Dusan Lajovic, Lukas Lacko, Jan-Lennard Struff and Adrian Mannarino, a Who's Who of "Who?" to many. You look at the top two, Federer and Nadal, it really is going to take something extraordinary to beat them.
"But if you ask me if I prefer another one, I say yes". In terms of the Quarter Finals normal posting should resume, still on a bit of a road trip so I can't squeeze posts in like I have done if I'm on a train or plane but it's slightly less hectic now and I will, of course, be watching tomorrow.
On Wednesday on Centre Court, he will start as underdog against Nadal, the 17-time major victor who is in the quarter-finals at Wimbledon for the first time since 2011 when he went on to finish runner-up.