sentences:  ESPN.com named him the minor leagues' best corner outfield prospect, the #1 Atlanta prospect, and third-overall minor-league prospect.Starting 2009 at Myrtle Beach, Heyward then gained successive promotions to Double-A Mississippi and Triple-A Gwinnett that year.He reached base in 42 of 49 contests at Myrtle Beach and assembled 16 multi-hit contests.