2013 Guimarães Open  The 2013 Guimarães Open was a professional tennis tournament played on Hard Courts. It was the first edition of the tournament which was part of the 2013 ATP Challenger Tour. It took place in Guimarães, Portugal between 22 and 28 July 2013. The following players received wildcards into the singles main draw:  The following players received entry from the qualifying draw: