Who was the first team to reach 100 wins in the MLB in 2018?

The Boston Red Sox were the first team to reach 100 wins in the 2018 MLB season. They achieved the milestone on September 12, defeating the Toronto Blue Jays 1–0 at Fenway Park.

The victory gave Boston a 100–46 record and made the Red Sox the first club to qualify for the 2018 postseason. David Price made the milestone especially memorable by pitching seven scoreless innings, while Boston’s bullpen completed the shutout. The Red Sox had last reached 100 wins in 1946, so the achievement marked a return to a level of regular-season success the franchise had not seen for more than seven decades.

Boston continued winning after reaching the century mark and finished the regular season with a franchise-record 108–54 record. The Houston Astros and New York Yankees also won at least 100 games, but they reached the mark later. The Red Sox then defeated both clubs in the postseason before beating the Los Angeles Dodgers to win the 2018 World Series.