LeBlanc played in college at Florida Atlantic and was a Palm Beach County high school football product out of Glades Central. He first played for the Chicago Bears out of FAU and came up with two interceptions in nine starts as a rookie in 2016 for Chicago.
Having a quick stint in Detroit following his time with the Bears, LeBlanc then landed in Philadelphia during the 2018 season. He grew into a role late in the year with injuries at cornerback for the Eagles and even ended up with a postseason start and interception in an NFC divisional round loss to the New Orleans Saints that year.