Tennis-Sinner's mastery mindset makes him man to beat as clay swing intensifies
By Shrivathsa Sridhar BENGALURU, April 22 (Reuters) - Jannik Sinner was once viewed as an explosive talent custom-built for hardcourt tennis but the four-times Grand Slam champion's assiduous work on his patience and control has made him the man to beat on clay heading into the French Open.