Lautaro's scorcher before the interval wiped out Christian Kouame's opener, and the Argentinian then forced Federico Ceccherini into scoring an own goal seven minutes after the break, helping the Nerazzurri turn around the game.
Brighton hit the woodwork five times during the game before Maupay turned from hero to villain when Harry Maguire's header following a corner hit his outstretched arm in the last action of the game.
Fernando opened the scoring for Guoan in the 17th minute, as he sent Zhang Yuning's pinpoint through ball into the top-left corner.
Several of those who tested positive for the virus have since recovered and Flamengo were able to begin Wednesday's match with seven of their usual starters.
Tianjin once had a good chance to break the deadlock in the 56th minute when midfielder Che Shiwei was fouled by defender Cong Zhen in the penalty area. After a VAR check, the referee awarded Tianjin a penalty kick, but Ghana's striker Frank Acheampong failed to convert it to a goal.
The Serbian, who is seeking his 18th grand slam title, will face Colombia's Daniel Elahi Galan in the next round.
China's Zhang Shuai overcame local favorite Alize Cornet 6-4, 7-6 (3) to reach the third round, equaling her previous best record at Roland Garros.
Chelsea showed both defensive frailty and fighting spirit as they fought back from 3-0 down away to West Brom to claim a 3-3 draw.
SAO PAULO, Sept. 27 (Xinhua) -- A Brazilian labor court ordered a national Serie A match between Palmeiras and Flamengo to proceed on Sunday, overturning an earlier decision to suspend the fixture because of a coronavirus outbreak at the Rio de Janeiro club.
Russia's Daniil Medvedev, seeded fourth, was unable to clinch his first win at Roland Garros after being shocked by Hungarian Marton Fucsovics 6-4, 7-6(3), 2-6, 6-1. It was the fourth successive first-round-exit for the 2019 US Open finalist at the French Open.
In the women's elite race, former world half-marathon record holder and winner of the 2019 New York Marathon winner Joyciline Jepkosgei will spearhead the event.