By Chris Rosvoglou Alexander Zverev suffered a gruesome ankle injury during his French Open semifinal against Rafael Nadal on Friday. A few hours after the match ended, he provided an update on his health on Instagram. “Looks like I have a very serious injury but the medical team—the doctors—are still checking on it and we’ll keep you updated,” Zverev said. On Saturday, the No. 3 ranked player in the world issued another update on his injury. It turns out he has suffered torn ligaments in his right foot. “Based on the first medical checks, it looks like I have torn several lateral ligaments in…