Yelling, “C’mon,” and, “Move your feet;” Williams started dominating again with big serves and crushed returns that the 50th-ranked Collins had no answer for.
“That felt really good for me,” Williams said. “Things were not going my way. Its not like she gave me those games. I had to earn it and turn it around.
That was really positive for me going into the next match.
“I needed to find me and know who I am;” Williams added. ”Nobody is Serena out here. It’s me. It’s pretty cool.”
The turnaround was also evidenced in Collins’ body language and conversations with herself. The Floridian, who grew up emulating the Williams sisters and playing on public courts just like they did, let her racket drop from her hands and then kicked it away in frustration after missing one particularly important shot.
Collins also sarcastically said, “That’s excellent,” after shanking another shot following a long rally that appeared to conclude with an awkward bounce in the final game.
Williams needed three sets to get by Mihaela Buzarnescu in the previous round and she clearly did not want to go the distance again this time.
Even when a series of untimely double-faults early in the second set enabled Collins to win four consecutive games.
Williams’ determination was also witnessed during the first set; when she ran down a drop shot from behind the court and won the point to break for a 4-3 lead.
Still chasing a record-tying 24th Grand Slam singles title, Williams next faces 21st-seeded Elena Rybakina; who defeated Elena Vesnina 6-1, 6-4 to reach the fourth round for the first time at a major.
When it was done, Williams and Collins both smiled as they shared a friendly embrace at the net.
Aside from Williams, top women’s players continue to exit Roland Garros.
The latest to go home was third-seeded Aryna Sabalenka, who was upset by Anastasia Pavlyuchenkova 6-4, 2-6, 6-0.
Sabalenka had been the highest remaining seed after top-ranked Ash Barty retired from her second-round match due to an injury on Thursday.
Second-seeded Naomi Osaka withdrew after the first round; saying she is taking a break from competition for mental health reasons.
Sabalenka’s 39 unforced errors helped Pavlyuchenkova reach the fourth round for the first time since she made it to the quarterfinals in Paris a decade ago.
“That was a while ago,” the 31st-seeded Pavlyuchenkova said. “I’m enjoying much more now every point (in) the tough matches than I used to before. I guess that also (is) the reason why I’m still here in the second week.”
Her next opponent will be Victoria Azarenka, who beat 23rd-seeded Madison Keys 6-2, 6-2 in 70 minutes.
The two-time Grand Slam champion reached the fourth round for the first time since her semifinal run in 2013.
Azarenka had played only one match on clay this season entering Roland Garros.
She withdrew from the Madrid Open after her first-round win there due to a back injury.
Unseeded Tamara Zidansek also advanced, reaching the second week at a major for the first time.
Early in the afternoon, play was interrupted by rain on all courts besides the main stadium — where the roof was closed.
Federico Delbonis said the interruption helped him calm down after stress started to get hold of him toward the end of the second set of his match with Fabio Fognini.
Serena Williams urges herself to erase deficit at French Open.
Delbonis took a quick shower and eventually prevailed 6-4, 6-1, 6-3 to also reach the fourth round for the first time at a major.
Fognini required treatment from a trainer after bloodying his hand by punching his racket strings in frustration multiple times early in the second set.
Following a marathon five-set battle, Alejandro Davidovich Fokina upset 15th-seeded Casper Ruud 7-6 (3), 2-6, 7-6 (6), 0-6, 7-5 in 4 hours, 35 minutes.
In the final game, which lasted 16 minutes, Davidovich Fokina hit an effective underhand serve to save a break point.
Ruud appeared surprised by the serve and had to scramble to get in position for a backhand return that he netted.
Kei Nishikori followed up two consecutive five-setters with a one-set victory; reaching the second week of the clay-court Grand Slam for the seventh time after qualifier Henri Laaksonen retired with a thigh injury while trailing 7-5.
Nishikori will next play sixth-seeded Alexander Zverev, who beat Laslo Djere of Serbia 6-2, 7-5, 6-2.
Second-seeded Daniil Medvedev also advanced with a straight-set win over big server Reilly Opelka of the United States.