1. 1998 New York Yankees (114-48, Won World Series over Padres 4-0)
The New York Yankees franchise has had plenty of great teams through the years, but the 1998 team was simply special. The players that made up the core of that team dominated for several years. In 1988, the Yankees batted .288 as a team, and were first in runs scored in the American League.
The team ERA was a solid 3.82, which may not have been the best compared to other years, but was also No. 1 in 1998 in the AL. New York also possessed one of the game’s dominant closers ever to play in Mariano Rivera who finished the regular season with 36 saves. What was likely most impressive was the astronomical run differential of plus-309. The Yankees went on to win the series that season going 11-2 in the playoffs.