The Spaniard heads to the clay with a sour taste in his mouth.
The Frenchman was docked a set point and a game as he argued vehemently with officials.
"Players are often times getting a shorter end of the stick, and I think it's right for any player, really, to speak up on this issue," Novak Djokovic said of the PTPA lawsuit.
Coco Gauff said she's unsure of the PTPA's lawsuit, but supports more prize money for players.
The Grand Slam king believes it is just a matter of time for his game to click into place.
The four-time champion will face Hailey Baptiste next.
The 38-year-old powered into the second round at the Miami Open.
