Three-time tournament champion Venus Williams won her opening match Thursday at the new site of the Miami Open by beating Dalila Jakupovic 7-5, 6-3.

Williams won the tournament in 1998, 1999 and 2001 when it was played on Key Biscayne. The event moved this year to the Miami Dolphins’ complex, and Williams played in the stadium.

Whitney Osuigwe, a 16-year-old qualifier from Bradenton, Florida, earned her first WTA Tour victory by beating Mari Osaka, 6-2, 6-4. Osaka is the sister of 2018 champion Naomi Osaka.

Venus Williams returns to Dalila Jakupovic, of Slovenia, during the Miami Open tennis tournament, Thursday, March 21, 2019, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)
Venus Williams returns to Dalila Jakupovic, of Slovenia, during the Miami Open tennis tournament, Thursday, March 21, 2019, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)

No. 3-seeded Petra Kvitova won her opening match by beating Maria Sakkari 6-1, 6-4.

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Whitney Osuigwe serves to Mari Osaka, of Japan, during the Miami Open tennis tournament, Thursday, March 21, 2019, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)
Whitney Osuigwe serves to Mari Osaka, of Japan, during the Miami Open tennis tournament, Thursday, March 21, 2019, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)
Mari Osaka, of Japan, returns to Whitney Osuigwe during the Miami Open tennis tournament, Thursday, March 21, 2019, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)
Mari Osaka, of Japan, returns to Whitney Osuigwe during the Miami Open tennis tournament, Thursday, March 21, 2019, in Miami Gardens, Fla. (AP Photo/Lynne Sladky)