In 2013, Quigley won his first professional singles tournament, an
ITF Men's Circuit tournament in
Decatur, Illinois. In 2016, Quigley entered the US Open and played doubles with fellow American
Nicolas Meister but they lost to Poland's
Łukasz Kubot & Austria's
Alexander Peya in the first round. Quigley qualified for the main draw at the
Delray Beach in 2015, but lost in the first round. This was his first
ATP World Tour appearance. ==ATP Challenger and ITF Futures finals==