As in the previous round, Serena Williams came under pressure.
She lost the first set 4-6 and started the second set by losing her own serve clip.
As in the previous round, something was raised in the American and as she started to take more and more points, the roar of victory became higher and higher.
At the score 3-3 in the second set, 38-year-old Williams won three straight paper clips and also the set.
In addition, she made sure to keep her own serve clips and drove over 32-year-old Tsvetana Pironkova 6-2 in the decisive set.
Serena Williams has been in the finals of the US Open two years in a row but has not won the tournament since 2014. Since becoming a mother in September 2017, she has chased her 24th Grand Slam title, which would make her the one who won the most through times, along with Margaret Court.