In 1909 the club decided to enter a team made up of its junior graduates in the ORFU senior series. In that inaugural season in the upper series, they finished in a first-place tie in the standings with the defending champion Toronto Amateur Athletic Club team, whom they defeated 9–3 in the resulting tie-break, securing the senior title in their first season of play. As league champions they qualified to compete for the Dominion championship along with the champions of the Intercollegiate Rugby Football Union and the Interprovincial Rugby Football Union.
In 1909, the club entered a team made up of its junior graduates into the ORFU senior series. In their inaugural season in the upper division, they tied for first place with the defending champion Toronto Amateur Athletic Club team, which they defeated 9–3 in the tie-breaker, securing the senior title in their debut year of play. As league champions, they qualified to compete for the Dominion championship alongside the champions of the Intercollegiate Rugby Football Union and the Interprovincial Rugby Football Union.