David Ferrer v Juan Martin Del Potro
The marathon man cometh. Ferrer has played 23 more games and spent 91 minutes longer on court than any of the other seven quarter-finalists so far this Wimbledon.
At 31 years, 96 days, he is also the oldest of the seven men remaining, yet somehow none of it seems to matter to the Spaniard for whom grinding out victories has become his byword.