The Mets improved to 9-1 on the season Tuesday night and surpassed the 1985 and 2006 teams for the best start in franchise history.
The Mets had tied the 1985 and 2006 squads with their win in the series opener against the Marlins on Monday night before extending their hot start with a come-from-behind win on Tuesday.
The '85 Mets squad finished the month of April with a 12-6 mark and the '06 Mets cruised to a 16-8 start to the season after the first month.
Wilmer Flores said after Tuesday's game that the Mets' early success reminds him of 2015 when the team won 11 straight games in the month of April to help give them an early boost before going on to reach the World Series.
"We won a lot of games in April and it helped us a lot," Flores said.
Manager Mickey Callaway, who became the third big league manager since 1900 to start his tenure with a 9-1 record, is crediting the team's "relaxed confidence" early in the season.
"Guys are going out there and just playing the game," Callaway said.
The Mets will look to continue their early-season success and improve to 10-1 on Wednesday when they go for the series sweep against the Marlins at 7:10 p.m. on SNY.