休士頓太空人 vs 紐約洋基 vs 波士頓紅襪

Earliest in MLB history a single league has 3 50-win teams

MLB - 06/21/2018 TOPPS NOW® Card 350 - Print Run: 604

2018 has been very successful so far for three American League teams. The Houston Astros became the first team to reach 50 wins this season, and 24 hours later the Yankees and Red Sox joined the 50-win mark. This marks the earliest in MLB history that a single league has three 50-win teams.