2010 - Did not play
2009 - Hit .265 with the Beach Bums in 30 games . . . drew 24 walks and stole 10 bases before being sidelined the rest of the season with injuries.
2008 - Spent the majority of 2007 season with the Jupiter Hammerheads, members of the Florida State League . . . finished the season hitting .167 with 23 walks and six RBI.
2007 - Split time in Jupiter and with the Greensboro Grasshoppers . . . finished the year hitting .251 with 13 doubles and 32 RBI . . . Guerrero also walked 60 times and stole 9 bases.
2006 - Played for Greensboro, Single A affiliates of the Florida Marlins and members of the South Atlantic League . . . appeared in 108 games and hit .226 with 84 hits, 65 walks and scored 61 runs.
2005 - Drafted in the 6th round of the 2005 MLB Amateur Entry Draft by the Florida Marlins . . . finished the season with the Jamestown Jammers of the New York Penn League . . . hit .243 in 62 games with 26 RBI and 88 hits.