Manager Paul Molitor confirmed Sunday that Milone would open the season as the Twins' No. 4 starter, Phil Miller of the Minneapolis Star Tribute reports.
With Milone's position in the rotation solidified, the Twins will have to decide between Ricky Nolasco and Tyler Duffey for the final spot. The soft-tossing lefty has looked good over his four spring appearances, but doesn't profile as much more than a deep-league option due to his historically modest strikeout rate and mediocre ERA and WHIP contributions.