On October 20, 2007, Kemp signed with the Chicago Cubs organization as an international free agent.[1] Prior to signing with the team, Kemp had played with the DOOR Neptunus and Sparta-Feyenoord in the Honkbal Hoofdklasse, the Dutch Major Leagues. He made his professional debut in 2008 with the rookie-level AZL Cubs, and also played for the Low-A Boise Hawks, hitting a cumulative .227/.292/.375 with 1 home run and 9 RBI in 32 games. He returned to the AZL Cubs in 2009, where he slashed .248/.303/.416 with 1 home run and 12 RBI in 25 games. On March 28, 2010, Kemp was released by the Cubs organization.[2] Kemp returned to the Neptunus, now known as the Curaçao Neptunus, following his release from the Cubs organization, with whom he has played for since.