By DAVID GINSBURG Lou Montanez singled in Melvin Mora with the tiebreaking run in the eighth inning, and the Baltimore Orioles defeated the Minnesota Twins 5-4 Thursday night for a two-game sweep.Mora and Aubrey Huff homered, and Gregg Zaun had three hits for Baltimore. The last time the Orioles won two straight was April 13-14 at Texas.Joe Mauer and Delmon Young had three hits apiece for the Twins, who have lost three straight and five of six.With the score 4-all, Mora hit a one-out single off Jose Mijares (0-1).