Rick Macci shares his views on Jannik Sinner following doping case

Rick Macci is a renowned tennis coach who helped guide Serena Williams, Maria Sharapova, and Andy Roddick to the top. The 70-year-old praised Jannik Sinner’s mindset after his doping scandal, saying, “What we see with Sinner is a locked-in high peak mental game. Number one has just begun,” he wrote in his social media post.