 Havens was selected in the 8th round by the California Angels and Manderfield was chosen by the Milwaukee Brewers in the 12th round of the 1977 Major League baseball amateur draft.Havens was later acquired by the Minnesota Twins (along with outfielder Ken Landreaux, catcher/first baseman Dave Engle, and right-handed pitcher Paul Hartzell) in exchange for Rod Carew.He made his major league debut with the Twins at Tiger Stadium, just three weeks before the 1981 players' strike, and finished 9th in voting for 1981 American League Rookie of the Year for having a 3–6 Win-Loss record, 14 Games, 12 Games Started, 1 Complete Game, 1 Shutout, 1 Game Finished, 78 Innings Pitched, 76 Hits Allowed, 33 Runs Allowed, 31 Earned Runs Allowed, 6 Home Runs Allowed, 24 Walks Allowed, 43 Strikeouts, 1 Hit Batsmen, 1 Wild Pitch, 323 Batters Faced, 4 Intentional Walks, 2 Balks and a 3.58 ERA.