tennisfan14
New User
What makes you think this? Doubt Fritz is - in the video below at 1:19, you can see that he's stringing with gut/hawk 3 (aka standard hawk) in Atlanta this year.It appears fritz is using it in the finals in Atlanta?...and Rublev in the finals in Hamburg?
I’ve got to get a hold of this string.
Also, from pictures it appears that Rublev is still using adrenaline (or possibly alu power).