Kei is listed as 177cm(5'10") and his birthday is July 23rd in Japanese tennis sites. Birthday is December(in atptennis.com) and Height:175cm(in ITF profile)
His height may have changed from his Jnr ITF profile but the month of his b'day!? Atptennis.com will probably update his profile if Kei gets more results.
Unlucky Kei, maybe he was a bit nervous at 4-1 up in the 2nd but Tursunov always has the ability to string many good games together. I think it's also a very tough match-up for him because Tursunov likes to overpower his opponents and Kei has no big serve or powerful groundstrokes to control the rallies.
It's been a great experience for sure and I hope he takes advantage of his SE for Washington.
The reality is even if Kei was to grow 3 or 4cm taller, he'll be around 180cm which is like a Hewitt or Agassi. Its enough to make a difference but not much compare to a Roddick or Safin.
So he's likely to meet opponents with more power, but I believe the combination of speed and great technique can make up the difference in physical strength. i.e. the quick hands of Federer, Nadal’s recovery speed. Like in Tai chi, use the opponent’s power to your own advantage.
Not that I’m saying Kei have these abilities, but if a player emerge similar to Kei’s physique and possess those talents can match the best of them. Obviously I hope Kei can be one.