- Jon was runner up in NJ Golden Gloves competition. His record was 21-1.
- Was an amatuer boxer after graduating from high school and won 21 bouts including five in the 1990 New Jersey Golden Gloves Competition.
- Has maintained a close relationship with his real-life Selena counterpart, Chris Perez.
- He has played the same character (Detective Antonio Dawson) on four different series: Law & Order: Special Victims Unit (1999), Chicago Fire (2012), Chicago P.D. (2014) and Chicago Justice (2017).
- He has crossed over to the "Law & Order" franchise twice. As Paul Falsone, he crossed over from Homicide: Life on the Street (1993) to Law & Order (1990). As Antonio Dawson, he crossed over from Chicago P.D. (2014) to Law & Order: Special Victims Unit (1999).
- Grew up in Clifton, New Jersey.
- Son, Jonathan, born (1994)
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