Some dumb people on here.....
2hbh was popularized by one PanchoSegura, who had a great 2hbh.
2hbh was frowned upon back then, seeming less manly, gentlemanly, and sporting.
The acceptance of 2hbh, led by one CrissyEverts, during the reign of McMillian in doubles, occurred around the mid 70's.
Every pro now started AFTER the mid '70's. So they were taught the by then accepted 2hbh WHEN THEY WERE TINY LITTLE WEAK KIDS!
Nadal is numero uno. He uses 2hbh.
Also the women's numero uno.