The 1945 Ottawa Rough Riders finished in first place in the Interprovincial Rugby Football Union with a 5–1 record but lost the IRFU Finals to the Toronto Argonauts by a total point score of 33–18.
Regular season Standings + Interprovincial Rugby Football Union Team GP W L T PF PA PtsOttawa Rough Riders 6 5 1 0 105 40 10Toronto Argonauts 6 5 1 0 92 44 10Hamilton Tigers 6 1 5 0 36 68 2Montreal Hornets 6 1 5 0 32 113 2
Schedule Week Date Opponent Result Record 1 Sept 22 vs. Toronto Argonauts L 9–11 0–1 2 Sept 29 at Toronto Argonauts W 8–6 1–1 3 Oct 6 vs. Hamilton Tigers W 19–10 2–1 4 Oct 13 at Montreal Hornets W 25–8 3–1 5 Oct 20 vs. Montreal Hornets W 28–5 4–1 6 Oct 27 at Hamilton Tigers W 16–0 5–1
Postseason Playoffs Round Date Opponent Result IRFU Final #1 Nov 3 at Toronto Argonauts L 8–27 IRFU Final #2 Nov 10 vs. Toronto Argonauts W 10–6
References