FORT WORTH, Texas: A season ago, Iga Swiatek only qualified for the WTA Finals with a couple of weeks to spare. She was the fifth of eight players to get into the season-ending event for women’s tennis, a situation she found stressful. What about in 2022? Swiatek was so dominant throughout the year that she booked her spot in September, the first to do so. And when play begins Monday, Swiatek will be the top seed after holding the No. 1 ranking since April and leading the tour in titles (eight) and match wins (64). Swiatek, a 21-year-old from Poland, heads the Tracy Austin Group that was determined by the draw Friday night, joined by Coco Gauff, Caroline Garcia and Daria Kasatkina. The Nancy Richey Group will be Ons Jabeur, Jessica Pegula, Maria Sakkari and Aryna Sabalenka. The singles and doubles fields both were split into two groups of four for the round-robin portion of the WTA Finals, which will be contested on an indoor hard court. The top two finishers in each group will advance to the semifinals. In doubles, the Rosie Casals Group is Pegula and Gauff, Barbora Krejcikova and Katerina Siniakova, Xu Yifan and Yang Zhaoxuan, and Desire Krawczyk and Demi Schuurs; the Pam Shriver Group is Gabriela Dabrowski and Giuliana Olmos, Veronika Kudermetova and Elize Mertens, Lyudmyla Kichenok and Jelena Ostapenko, and Anna Danilina and Beatriz Haddad Maia. Pegula and Gauff are the first pair of women entered in both singles and doubles at the WTA Finals since Serena and Venus Williams did it in 2009. No. 3 Pegula and No. 4 Gauff are also the first two American women both ranked in the top four since the Williams sisters in 2010. Jabeur, Pegula, Gauff and Kasatkina are all appearing at the event for the first time. Since 2000, only twice were there more WTA Finals participants making their singles debuts: In 2001, five women were in the field for the first time, and last year, six were. The WTA Finals are returning to the United States for the first time since 2005 after the tour moved it out of China for the second year in a row. The 2021 WTA Finals originally were supposed to be held in Shenzhen, China, but were moved to Guadalajara, Mexico, amid the coronavirus pandemic. Then, late last year, the tour said that it would not have any tournaments in China in 2022 because of concerns about the safety of Peng Shuai, a Grand Slam doubles champion who accused a former government official in that country of sexual assault.