The Senior Men's side competes for the MacTier Cup.
The Rugby Ontario program and its clubs have produced ten High Performance players currently on the Rugby Canada National Men's Team (XVs); 12 High Performance players currently on the Rugby Canada National Women's Team (XVs); five High Performance players currently on the Rugby Canada National Men's Sevens Team; and eight High Performance players currently on the Rugby Canada National Women's Sevens Team.
There are ten men's competitions which are sanctioned by the ORU.
The Marshall Premiership and Championship are contested by the best teams from the Toronto Rugby Union and the Niagara Rugby Union, and feature promotion and relegation.
The winners of the TRU and NRU compete in the Intermediate Cup against the lowest placed team in the Marshall Championship to determine who will play in the Championship the following year.