: existing or occurring between leagues the introduction of interleague play interleague games.

Do MLB teams play interleague?

Interleague play in Major League Baseball refers to regular-season baseball games played between an American League (AL) team and a National League (NL) team. Interleague play was first introduced in the 1997 Major League Baseball season.

How does interleague play work in MLB?

"For the first time in the history of Major League Baseball, Interleague games are to be played during the regular season. ... ' Streaks by both teams and individual will continue (or be halted) when playing Interleague opponents in the same manner as if playing against an intraleague opponent.