On August 2, 1967 — Team Canada gets their first official win, beating favorite Cuba 10-9 in the 1967 Pan American Games. Maurice Oakes drives in four and Glennis Scott gets the win. Canada had won earlier in the event, but that win was removed due to their having four players with minor league experience in an amateur-only event.

Source:
Baseball Reference August 2
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game