Rafael Nadal, above, came from behind to defeat Juan Martin del Potro 4-6, 6-0, 6-3, 6-2 and advance to the U.S. Open final. (Clive Brunskill/Getty Images)

Matches completed Friday:

Kevin Anderson (RSA) (28) def. Pablo Carreno Busta (ESP) (12) 3-1
Three players had match winner correct
Two players (John, Wes) had match score correct

Rafael Nadal (ESP) (1) def. Juan Martin del Potro (ARG) (24) 3-1
Five players had match winner correct
Three players had match score correct

John was the biggest mover this round with three match winners correct, always with the correct score. Wes has moved into the lead with Serene close behind.

For download: US Open Tennis 2017 Prediction Challenge! Semifinals.pdf

Overall
1 Wes Zetaruk 122
2 Serene Ford 116
3 John Lo 96
4 Eva Kafkova 61
5 Petr Havlik 48
6 Michael Poplawski 38
Semifinals
1 John Lo 80
2 Wes Zetaruk 64
3 Serene Ford 58
4 Petr Havlik 20
5 Eva Kafkova 17
6 Michael Poplawski 0
Quarterfinals
1 Wes Zetaruk 58
Serene Ford 58
3 Eva Kafkova 44
4 Michael Poplawski 38
5 Petr Havlik 28
6 John Lo 16