| Round of 16 | Quarterfinals | Semifinals | Final | Winner |
|---|
| | | | | | | (1)Ivan Radomirovic (ON) | | | | | | ---- | (1)Ivan Radomirovic (ON) | | | | | BYE | | | | | | | ACE 2012/04/07, Sat at 1:00pm | (1)Ivan Radomirovic (ON) | | | | Alberto Vergara (ON) | | 6-2, 6-1 | | | | ACE 2012/04/07, Sat at 10:15am | Mark Jensen (ON) | | | | | Mark Jensen (ON) | 6-1, 6-3 | | | | | | | ACE 2012/04/08, Sun at 2:30pm | (1)Ivan Radomirovic (ON) | | | (3)Ron Singer (ON) | | | 6-1, 7-6(5) | | | ACE 2012/04/07, Sat at 11:15am | (3)Ron Singer (ON) | | | | | Brooks Coffey (ON) | 6-1, 6-1 | | | | | | ACE 2012/04/07, Sat at 1:15pm | (3)Ron Singer (ON) | | | | Mackenzie Connor (ON) | | 6-0, 6-3 | | | | ACE 2012/04/07, Sat at 11:15am | Mackenzie Connor (ON) | | | | | Nicholas Lau (ON) | 3-6, 6-4, 7-5 | | | | | | | | ACE 2012/04/08, Sun at 4:45pm | (1)Ivan Radomirovic (ON) | | Eric Cherniy (ON) | | | | 6-2, 6-2 | | ACE 2012/04/07, Sat at 11:30am | Eric Cherniy (ON) | | | | | Alexander Marck (ON) | 6-1, 6-0 | | | | | | ACE 2012/04/07, Sat at 2:00pm | Nikolas Loncar (ON) | | | | Nikolas Loncar (ON) | | 6-4, 6-3 | | | | ACE 2012/04/07, Sat at 11:30am | Nikolas Loncar (ON) | | | | | (4)Sam Burley (ON) | 7-5, 6-4 | | | | | | | ACE 2012/04/08, Sun at 2:00pm | (2)Tyler O'meara (ON) | | | Spencer Grant (ON) | | | 6-2, 6-1 | | | ACE 2012/04/07, Sat at 11:45am | Spencer Grant (ON) | | | | | Nicholas Ryan De Guzman (ON) | 6-7(5), 6-1, 7-6(2) | | | | | | ACE 2012/04/07, Sat at 2:30pm | (2)Tyler O'meara (ON) | | | | Camilo Nunez (ON) | | 6-2, 6-1 | | | | ACE 2012/04/07, Sat at 11:45am | (2)Tyler O'meara (ON) | | | | | (2)Tyler O'meara (ON) | 6-0, 6-0 | | | | | | | | | |
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