Beane remained in Jackson until 1984, when he received his first promotion to MLB, appearing in five games for the 1984 New York Mets. In 1985, Beane spent most of the season with the Tidewater Tides of the Class AAA International League, getting called up to the 1985 Mets for eight games. He batted .284 for the Tides in 1985, leading the team with 19 home runs and 77 runs batted in. Following the season, the Mets traded Beane with Joe Klink and Bill Latham to the Minnesota Twins for Tim Teufel and Pat Crosby, a minor league player.