 On July 16, 2007, the Baltimore Blast of Major Indoor Soccer League selected Velten in the 8th round of the MISL Supplemental Draft, but he did not sign with the team.On April 8, 2008, Velten signed with the Charleston Battery in the USL First Division., and played 26 games for the Battery before returning to Harrisburg in 2009.On February 9, 2010, he signed with the new founded club AC St. Louis.