By Rory Carroll (Reuters) -France’s Caroline Garcia put on a serving masterclass to claim the biggest title of her career on Monday by defeating Aryna Sabalenka 7-6(4) 6-4 to win the WTA Finals in Fort Worth, Texas. Garcia covered her face with her hands and fell on her back after a Sabalenka forehand sailed wide on match point to earn her fourth title of the year. “Today was such an intense final,” a smiling Garcia told Tennis Channel while donning a cowboy hat. “I’m very proud of how I was able to keep my mind calm and really focus on one point at a time, one game at a time.” Both players’ t…