Venus the older of the Williams sisters started her 30th year on the WTA Tour with a victory over fellow American Katie Volynets at the ASB Classic in Auckland, New Zealand.
The 42-year-old beat Volynets, who is half her age, 7-6 (7-4) 6-2 and will next play China’s Lin Zhu.
Former world number one Williams made her Tour debut in October 1994.
She entered four tournaments as a wildcard in 2022, the only year since 1994 in which she did not win a singles match.
Her victory over Volynets who turned 21 on New Year’s Eve was interrupted by rain during the first-set tie-break, which her opponent was leading.
But Volynets faded as the match stretched into the evening, with Williams wrapping up her first singles win since Wimbledon in 2021.
Williams has been awarded a wildcard to compete in the Australian Open, 25 years after she first played at the tournament.
A seven-time Grand Slam singles champion, Williams has never won the singles title in Melbourne, losing to now-retired younger sister Serena in the 2003 and 2017 finals.
The Australian Open will start on January 16.
Writing by Tersoo Nicholas