That Topic has already been discussed and I remember several users with good reputation gave you the answer that Wawrinka uses the 95D.
At least breakpoint should have known as he appears in every second topic I read....
But he's obviously busy defending outdated Wilson 90s or judging the size of a tennis racket by watching a picture. Objects on photos seem to be bigger or smaller as they are in reality depending on angle and way more things I don't have much clue of.
Here you go again:
First pic:
Yonex 95D with 6 strings through the black bumper guard.
Wawrinka using paintjob at Wimbledon. Take a look at the bumper guard with also 6 strings going through.
Now a pic of the 89t with 8 strings going through the bumper guard.
And finally it's neither a 97t as there are also 8 strings going through the bumper guard.