Recalling Stefanos Tsitsipas dissing Andrey Rublev as a player with "few tools", Daniil Medvedev struck back with his wish for the Greek.
Ten American received main draw wild cards into the tournament, which begins on Monday March 6.
Sofia Kenin and Jack Sock lead a list of American wild-card recipients for next week's BNP Paribas Open.
Daniil Medvedev stretched his winning streak to 12, and finished with a flourish.
The rivals have had some epic battles in the past. Could Friday be their next?
The German spoke of the confidence he had last year, before a disastrous injury took him out.
Fans to automatically receive refunds for event scheduled for Sunday, March 5th in Las Vegas.