According to ELIAS

Santana one-hits White Sox

Ervin Santana allowed one hit in his complete-game 6–0 home win over the White Sox. April 15 is the second-earliest calendar date on which a pitcher has thrown a complete-game no-hitter or one-hitter for the Twins franchise. Santana threw 107 pitches. Walter Johnson allowed one hit in a 3–0, season-opening win for the Washington Senators over the Philadelphia Athletics on April 14, 1910. Before that game, William Howard Taft started the tradition of the president throwing out the first pitch of the season (to Johnson, on that day.)