Top-seeded Simona Halep won 10 straight games in beating Sara Sorribes Tormo 6-4, 6-0 to reach the second round of the French Open on Sunday and extend her winning streak to 15 matches.
Wearing thick black leggings and a long-sleeved pink jersey to combat the chilly conditions on Court Philippe Chatrier, the 2018 champion made a series of unforced errors and trailed 4-2.
But then she found her range, clinching the first set with a hold to love and sealing victory on her first match point when her Spanish opponent clipped a forehand wide.
She is ranked second but seeded first at Roland Garros because defending champion Ash Barty skipped coming to Paris because of coronavirus concerns.
Halep won titles on clay in in Prague and Rome and her winning run - interrupted by the pandemic - dates to February.
Over on Court Suzanne Lenglen, U.S. Open runner-up Victoria Azarenka experienced a vastly different temperature to Flushing Meadows only two weeks ago.
The tenth-seeded Azarenka fumed when match officials didn't immediately send her and opponent Danka Kovinic back to the locker-room during a rain interruption.
Goffin, a former quarterfinalist here, was the first seeded player to be knocked out when he lost 7-5, 6-0, 6-3.
His countrywoman Elise Mertens - the 16th seed - fared better in beating 122-ranked Russian Margarita Gasparyan 6-2, 6-3.