The Spanish icon's bombshell decision came four days after the 37-year-old lost an exhibition game
Former world number one eligible to return to competition immediately
Britain moves into world rankings top 30 for the first time in her career
20-year-old Spaniard beat 22-time Grand Slam champion 3-6, 6-4, 14-12 in Las Vegas
Former world number one aims to avoid any injury setbacks for upcoming claycourt season
Britain upsets third seed Navarro 6-3, 6-1 in 74 minutes
Australian world number nine wins 6-4, 6-4 to defend Mexican Open title
World number six knocked out 6-3, 3-6, 6-3 in first round by fellow German Altmaier
World number one says it’s his ‘favorite’ Masters tournament
World number four defeats Kazakh player 6-3, 7-5 in straight sets to complete an 88-minute triumph