Wawrinka v Lopez, 2016 US Open practice 4K 

Great video. These videos give a great sense of speed, power and just how fast these guys are around the court. Awe inspiring stuff!

I just love how Stan can crush the ball!

Amazing. Thank you for this!

That power and touch though..... @3:30

nice seing feliciano hitting some backhands, then at the tournaments, he just slices and slices endesly the ball....

Did you know all the power in serve comes from the ankles and not the elbows? I average 6 mph using no hands, kicking the ball over the net.

After the serve at 4:37 does anyone else here "Oh S*#T"

awesome - we like it :)

Thats how you win us open.

Lopez has a backhand from the 80's

Notice the ball hitting the back fence with so much power...

Damn that last volley

This is perfect vision so the camera is probably too expensive !

YYYEEEAAAHHHHH STAN THE FUCKIN MMAAAAAANNNNNN!!!!!!!!!!!!!!!!!

Wawrinka took the crown here. Sometimes I wondered if he was strong as a bear.

That looks like Mugi @8:20

It’s not 4K if it streams at 1080.

Lopez, what a physique he has...super jealous

4:01あ～よけらんね(笑)

Lopez reminds me a lot of Greg Rusedski.

サムネワロタ

L'entraîneur qui pète un plomb 7:57

I can see why lopez never wins any tournaments , i could nearly beat him 4-6 5-7