Former French Open finalist Sara Errani has failed a doping test for a hormone that can hide the presence of the male hormone testosterone, two Italian newspapers reported on Monday.
Sania Mirza and Barbora Strycova could next face the team of Martina Hingis and Chan Yung-jan in the Indian Wells women's doubles quarterfinals.
Sara Errani crushed Barbora Strycova 6-0, 6-2 in the final of the Dubai Tennis Championships to win her ninth career WTA title.
Sara Errani was a 2013 finalist at the Dubai Tennis Championships, losing to Petra Kvitova of Czech Republic.
Italy's Sara Errani had to fight it out against Madison Brengle 4-6, 6-1, 6-4 to set up semi-final clash against Caroline Garcia.
Simona Halep will play for her 12th career title and fourth of the year in Sunday's championship match against against Swiss teen Belinda Bencic, who stunned world number one Serena Williams in the other semifinal of the Rogers Cup.
While David Ferrer beat Italian Fabio Fognini 6-2, 6-3, Sara Errani scored a 7-6 (7/2), 6-1 win in the women's final over Slovakian sixth seed Anna Karolina Schmiedlova.
Caroline Wozniacki defeated Sara Errani to storm into her first Grand Slam semifinal in three years.
Sania Mirza and Cara Black lost 7-6, 6-3 against top seeds Sara Errani and Roberta Vinci, who won their first Rogers Cup title.
The second-seeded Sara Errani and Roberta Vinci beat 14th-seeded Timea Babos of Hungary and Kristina Mladenovic of France 6-1, 6-3 in the final.