On a spectacularly sunny Saturday afternoon in the French province of Roquebrune-Cap-Martin, the first match on Court Rainier III featured both players contesting their third Rolex Monte-Carlo Masters semi-final. The victor, Italy’s Jannik Sinner, extended his dominant 8-4 head-to-head rivalry against Germany’s Alexander Zverev, marching through in straight sets, 6-1, 6-4. Commanding performance It was a commanding performance, showing the 24-ye…