Colorado Rapids surprised many by nabbing Philadelphia Union goalkeeper Zac MacMath in the latest drafts. The 23-year-old was seen as one of the best young goalkeepers in the MLS and it was a surprise that Philadelphia decided to let him leave. He will be spending the next one year at Colorado Rapids, who have offered the second round draft pick in exchange. Speaking about the move,MacMath acknowledged that he did not see himself being first-team player at Philadelphia this season. This is despite featuring in almost 30 matches last campaign. Union coach Jim Curtin explanation was that Philadelphia already had three top goalkeepers and it did not make sense to…