The pros will play again Friday, starting at noon with the last quarterfinal match starting about 3 p.m.
Amateur play will start earlier in the morning -- singles, hardball singles and doubles -- and continue into the evening.
In professional play there were a few upsets on Thursday:
No. 3 seed Victor Crouin (France) was knocked out by Sam Fenwick (Wales) and Cameron Seth (Canada) defeated No. 8 seed Andres Herrera (Colombia).
On Friday, No. 1 seed Juan Camilo Vargas (Colombia) will face Seth, and Fenwick will take on No. 7 seed Miled Zarazua (Mexico).
Other matches will pit No. 4 seed Sebastien Bonmalais (France) against No 5 seed Eric Galvez (Mexico), and No. 2 seed Reuben Phillips (England) against No. 7 seed David Cromwell (USA).