It was a regular season of extremes for Major League Baseball, in the standings and on the stat sheets. For the first time, four teams reached 100 victories. But for only the second time, four teams had 100 losses.

The Houston Astros earned home-field advantage throughout the postseason after posting the majors’ best record: 107-55. The Los Angeles Dodgers (106), the Yankees (103) and the Minnesota Twins (101) also exceeded the 100-win mark.

The Astros have come full circle: After stumbling to at least 100 losses each season from 2011 to 2013, they now have a streak of three seasons with at least 100 wins. Perhaps inspired by that example, the Detroit Tigers (114 losses), the Baltimore Orioles (108), the Miami Marlins (105) and the Kansas City Royals (103) have all embarked on long rebuilding projects. Only one other season (2002) included four teams with 100 defeats.

Four playoff teams from last season failed to make it back to October: the Chicago Cubs, the Cleveland Indians, the Colorado Rockies and the Boston Red Sox, who won the 2018 World Series but fell to 84-78. The Red Sox had the majors’ highest payroll this season but now intend to cut more than $30 million to reset their luxury-tax penalties. They are also seeking a new general manager after firing Dave Dombrowski, their president of baseball operations, early this month.