Prior to Marist: Competed as a freshman at Miami of Ohio ... While at Miami, he posted three times for the Red Hawks in 2012 MAC Championship competition; the 200-yd butterfly (1:55.22), the 400-yd IM (4:07.32) and the 1650-yd freestyle (16:30.00).

As a high school competitor at St. Anthony's, Sullivan was a four-time NCSA Junior National finalist ... Five times he was honored with All-State distinction and six times on the All-County team ... As a senior, he served as a team captain ... Graduated St. Anthony's with honors.