Mark Knowles On Sinner and Sabalenka Winning The Sunshine Double + Clay Season and Coaching Pegula

In this episode of The Inside-In Tennis Podcast, host Mitch Michaels welcomes Mark Knowles, former doubles world No. 1 and current coach of Jessica Pegula, to reflect on the historic Sunshine Double victories by Yannick Sinner and Aryna Sabalenka. Knowles praises the consistency and mental resilience of Pegula, who has now reached 200 consecutive weeks in the top 10, crediting her relentless drive to improve and the effective coaching partnership with Mark Merklin. He highlights Pegula’s dramatic serve improvements in 2026, noting her increased ace-to-double fault ratio and confidence in high-pressure moments. The conversation also explores the mental fortitude of top players like Sabalenka and Sinner, emphasizing how they thrive under pressure and adapt their game plans. Knowles shares insights on the transition to clay season, discussing surface differences between Charleston’s green clay and Houston’s red clay, and expresses excitement for young American talents like Learner Tien and Arthur Fils to shine on the slower surface. He concludes with thoughtful advice for parents on nurturing athletic passion without pressure, stressing authenticity, hard work, and honesty about the challenges of elite sports.