Alvin Glenn Davis (born September 9, 1960), nicknamed "Mr. Mariner",[1][2] is an American former Major League Baseball first baseman and designated hitter.

After just one game, he was promoted to the majors, due to a hand injury to Ken Phelps on April 6,[4] and Davis remained with Seattle for eight seasons, through 1991.

[9] Davis holds the Mariners and Major League Baseball record for the most consecutive games reaching base to start a career, with 47.

[10] Well-liked by Mariners fans, Davis held most of the young franchise's offensive records until the arrival of Ken Griffey Jr., Edgar Martínez, and Alex Rodriguez.

Named the Mariners' MVP, he was also voted the American League's Rookie of the Year, with a .284 batting average, 27 home runs, and 116 RBI in 152 games.

His batting average fell to .221 in 1991 with 12 home runs and 69 RBI in 145 games;[9] with young Tino Martinez in the organization, Davis was not in the team's plans for 1992.

[9] Davis had two hits in his final major league game,[19] but was released after only a half season in late June.

[20] He soon joined the Kintetsu Buffaloes of Osaka in Japan,[20] and appeared in 40 games in the Pacific League, batting .275 with five home runs and 12 RBI.