The Milwaukee Brewers on Saturday invited some of the most promising young prospects in their system to the team's spring training camp in Phoenix.Right-handers Eric Arnett and Kyle Heckathorn, high picks in the 2009 draft, were invited along with left-hander Zach Braddock, centerfielder Logan Schafer and catchers Jonathan Lucroy and Martin Maldonado.Arnett was the Brewers' first-round pick in June out of Indiana University, and Heckathorn was a first-round supplemental pick out of Kennesaw State (Ga.). Their signing bonuses included invitations to big-league spring training.