Gonzalez who seemed not getting enough warm-up kept looking at the sky and scoreboard, perhaps was looking for a sign of rain.
It started to drizzle a bit and Gonzalez sought treatment from a trainer for his feet but that didn't help to delay his lost to Nadal for another day.
Light shower continued through the evening but I was glad that both women's singles semifinals finally took off.
Kim Clijsters reached the final by beating Serena Williams 6-4, 7-5.
However the match was marred by controversy after Serena was docked a point for yelling at an official who called a foot fault.
I may look very calm on the outside but guess what, I'm shit scared of Serena inside.
The line judge reported it to the chair umpire which led to the chair umpire awarding a point to Clijsters, ending the match.
Serena already had been given a code violation warning when she broke her racket after losing the first set.
At the press conference, Serena denied she threatened to 'kill the line judge' and it was unnecessary to apologize to the lady. You can read the full transcript here.
In another women's semifinal that took place at the same time, Caroline Wozniacki's victory was overshadowed by the controversy.
Wozniacki will play in her first Grand Slam final after defeated Yanina Wickmayer 6-3, 6-3.
Here's Sunday's order of play on day 14 at the U.S. Open (prefix denotes seeding):
(Starts at 12:00 PM)
1-Roger Federer (Switzerland) v 4-Novak Djokovic (Serbia)
3-Rafael Nadal (Spain) v 6-Juan Martin del Potro (Argentina)
9-Caroline Wozniacki (Denmark) v Kim Clijsters (Belgium)
(Images via Yahoo! Sports)