Osuigwe has been playing tennis at the IMG Academy since age six, where her father Desmond has been a teacher at the academy since 1997 and acts as her primary coach. Desmond is from Lagos in Nigeria and played professional tennis events at the ITF Futures level before coming to the United States to attend college. Whitney has an older brother named Deandre who is a college basketball player and a younger sister named Victoria who also plays tennis.[4][5]
Junior career
In June 2017, Osuigwe climbed to No. 2 in the junior rankings by dominating the clay-court events in the previous six months. She started by reaching the semifinals at the Orange Bowl in December, and then won two Grade-1 clay-court tournaments in back-to-back weeks in February. Osuigwe capped off her dominance in this part of the season by winning the 2017 Junior French Open over fellow American Claire Liu.
In doing so, she became the first American to win the girls' event since Jennifer Capriati in 1989, the fifth American champion overall, and the ninth youngest winner of the event at under 15 years and 2 months. This was also only the second time the final was contested between two Americans, with the other occurring in 1980.[6]
Osuigwe would go on to finish the season as the number-one-ranked junior in the world, for which she was named the combined 2017 ITF Junior World Champion. Furthermore, she then won the Orange Bowl before the year came to a close.
Osuigwe made her WTA Tour main-draw debut at the 2018 Miami Open, losing to her fellow wildcard and junior rival Claire Liu.
In January 2019, Osuigwe played alongside David Ferrer on the Spain team in the 2019 Hopman Cup, replacing Garbiñe Muguruza who was out due to injury. Osuigwe played only the mixed-doubles match, losing to the French team which consisted of Lucas Pouille and Alizé Cornet. In March, she entered the Miami Open main draw as a wildcard, winning her first-round match against fellow wildcard Mari Osaka, the sister of Naomi Osaka.[8]
Performance timeline
Key
W
F
SF
QF
#R
RR
Q#
DNQ
A
NH
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (DNQ) did not qualify; (A) absent; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.
Only main-draw results in WTA Tour, Grand Slam tournaments, Fed Cup/Billie Jean King Cup and Olympic Games are included in win–loss records.[9]
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United States
Francesca Di Lorenzo
Beatriz Haddad Maia
Victoria Jiménez Kasintseva
Dia Evtimova 
Ilona Kremen
Gaia Sanesi 
Chanel Simmonds
Jovana Jakšić 
Renata Zarazúa
Kaja Juvan
Wang Xinyu 
Emily Appleton
Clara Burel
Margaryta Bilokin
Cho I-hsuan
Ayumi Miyamoto
Thasaporn Naklo
Clara Tauson 
