US Soccer has released the match-ups for the first round of the 2017 US Open Cup, to be played on May 10, and the second round, which will be played on May 17.
The first round features 17 "Open Division" (i.e. local amateur sides from around the country) entrants, plus 21 representatives from PSL and 18 from NPSL - creating a 56-team, mostly-amateur opening round of the tournament. In the second round, six NASL clubs and 18 teams from USL join the USOC party - add them to the 28 survivors from the first round and you get a 52-team jamboree.