Flashback to 1989 French Open ala Michael Chang

Just viewed highlights of Jared Donaldson and Gregor Dimitrov at French Open and Dimitrov prevailed in a marathon five set thriller in which Jared was a huge underdog.
Donaldson was cramping up badly and employed an underhand serve that kept him in the match for awhile.

Chang used the same tactic against Ivan Lendl ( #1 at the time )
Michael won the French that year over Stephan Edberg.

Amazing tennis both times at Roland Garros