STUTTGART, Germany — Maria Sharapova lost in the semifinals of the Porsche Grand Prix on Saturday, her contentious comeback from a 15-month doping ban ending in defeat to one of her biggest critics.
Sharapova, a five-time Grand Slam winner and a former world No. 1 who tested positive for meldonium at last year’s Australian Open, fell to Kristina Mladenovic, 3-6, 7-5, 6-4.