Spanish football star is facing a five-year prison sentence for alleged tax fraud. Tax authorities also want the former Real Madrid and Liverpool midfielder to pay nearly $6.14 million in fines.
Federer, the defending champion, had chalked up 17 consecutive wins in 2018, including his 20th Grand Slam title at the Australian Open, but was unable to outlast his determined 29-year-old Argentine opponent.
The 27-year-old world number one from Hong Kong swept to a 5-0 win against England's world number four Maria Catalano, who earlier in the day had stunned 11-time world champion Reanne Evans 4-3.
Besiktas charged after a cat wandered on to the pitch during the Champions League last-16 play with Bayern Munich in Istanbul.
Lionel Messi scores his 99th and 100th goals as Barcelona secures 3-0 win
over Chelsea. Meanwhile, Bayern Munich defeats Besiktas 3-1 to send the Black Eagles out of Champions League.
Manchester United suffers a shock exit in the last 16 after Sevilla substitute Wissam Ben Yedder strikes twice at Old Trafford.
Despite the loss in the 29th career meeting between the two sisters, Serena, who is still shaking off the rust after a long layoff, leads their career series 17-12.
Serena Williams competes against her sister Venus in a mouth-watering Indian Wells third round showdown after her return from a 14-month absence.
Roger Federer is looking forward to defeating Argentina's Federico Delbonis in a second round match on Saturday.
The Winter Paralympians of North and South Korea have appeared separately under their own countries' flags after a row over the blue-and-white Korean unification flag.
The 2-0 Europa League brought an end to AC Milan's 13-match unbeaten run while Dortmund slumped to a 2-1 defeat to Salzburg.
The former world number one Maria Sharapova loses first round match with a 6-4 6-4 defeat to Japan's Naomi Osaka at the Indian Wells tennis tournament.
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