Originally Posted by cjs
Fed doesn't have an abbreviated take back like Pancho. I think Pancho's serve is really beautiful, though I wouldn't be copying how he lands on his right leg (a product of the old serve and volley days)...
That landing is a actually a product of serving rules that were in place when Pancho learned to serve. He started his "pro" career in the late 1940s. Prior to the 1960s, serve rules required players to keep one foot in contact with the ground and behind the baseline before striking the ball.
Many players continued this style of serving in the '60s and '70's. Take a look at Rod Laver's serve in the early/mid '70s. Many coaches were still teaching this style even in the 80s. Borg, OTOH, in the early '70s was jumping (into the court) and landing on the front foot before the back leg swung forward.
S&V greats of the 80s and 90s, like Edberg and Sampras, employed a jumping style similar to Borg. Becker, however, was a bit different.