- Name: 7 Rosario Colosimo
- Nationality: —
- Position: D
- Shot: Left
- DOB: 01/12/2004
- Height: 6-0
- Weight: 176
- Hometown: Kleinburg, ONT
- 2019-20 Team: Mississauga Reps U16
- 2018-19 Team: Vaughan Kings U14
- 2017-18 Team: Toronto Jr. Canadiens U13
- CHL Status: 2020 (OHL)
- USHL Status: 2020
- NHL Draft Eligible: 2022