Background and college
Born November 15, 1982, in Syracuse, New York, Kowalewski attended Solvay High School and later Syracuse University. In high school he rushed for 1,114 yards and 12 touchdowns as a senior, and excelled on both sides of the ball. While at Syracuse, Kowalewski moved from defensive end to linebacker prior to the 2002 Spring practice, and to tight end before the beginning of the 2002 season. He totaled 33 receptions for 441 yards and three touchdowns during his collegiate career, while also achieving success academically. He graduated with a degree in retail and consumer studies.
As a Jet
Due to injuries, he was unable to work out for pro scouts, and went undrafted in the 2006 NFL Draft. His disappointment was short lived, however, as he received invitations to try out for both the Jets and the Miami Dolphins. On the advice of his agent, he signed as an undrafted rookie free agent with New York on May 15, 2006. After spending the 2006 season on the practice squad, Kowalewski made his NFL debut in the opening week of the 2007 season in a loss to the New England Patriots. Kowalewski scored his first NFL touchdown on November 4, 2007, against the Washington Redskins.
Kowalewski was waived by the Jets in April 2008.