Johnny O'Leary vs. Billy MacKenzie
1915-12-17 : Johnny O'Leary beat Billy MacKenzie by TKO in round 12 of 12
- Location: Saskatoon, Saskatchewan, Canada
- Canadian Lightweight Title (2nd defense of O'Leary)
- According to the Tacoma Daily News, the referee stopped the bout to save McKenzie from further punishment. The December 18, 1915 edition of the New York Times reported the same information.
O'Leary vs. McDonald
| Canadian Lightweight Title Fight
O'Leary vs. Scaler