The Tsitipas/ Dellien encounter on Simonne Mathieu highlighted both the good and sometime poor aspects of today’s game. The complete and utter dependence of exaggerated top for every execution seems to go unnoticed these days.
If, for example, Tsitsipas aspires to lift a Slam, several alterations will be needed to get him near the top. He owns a high lift single handed backhand overloaded with so much topspin Dellien could respond in kind with time to spare.
The Athenian should learn a slice, or at least a somewhat flat response to give an opponent fresh problems during a rally.
To make heavy weather against a low ranged Bolivian using the drop shot (poorly executed) and single hander, is far too limited to make it to the top.
Everywhere here in Paris are examples of high calibre achievement from a very limited inventory. The topspin lob, (either static like Andy Murray, or running like Laver) seems long gone. The conventional overhead is rapidly giving way to the drive volley and the chipped approach has become as rare as the dodo!