Klecko was selected by the New York Jets in the sixth round (144th overall) of the
1977 NFL draft. Despite eight sacks by Klecko, his team went only 3–11 his first season. However, when he and
Abdul Salaam were joined by
Mark Gastineau and
Marty Lyons on the Jets' defensive line, they formed one of the top defensive lines in the
NFL, known as the "New York Sack Exchange." The four combined for 66 sacks in
1981, including a league-leading 20.5 by Klecko, to lead the Jets to their first playoff game since
1969. Klecko was honored with his first
All-Pro selection. In November 1981, Klecko, Gastineau, Salaam and Lyons were invited to ring the ceremonial opening bell at the
New York Stock Exchange, which served as the inspiration for their nickname. Klecko appeared in only two regular season games for the Jets in 1982, rupturing the patella tendon in his right knee in the second game of the season against the
New England Patriots. The Jets made the playoffs in
1982, losing the
AFC Championship game to the
Miami Dolphins. Klecko made 2 more appearances with the Jets during their playoff victories over the
Cincinnati Bengals and
Oakland Raiders. Klecko moved from
defensive end to
defensive tackle in 1983, and was named to the
Pro Bowl at his new position in
1983 and
1984. The Jets switched to a 3–4 defensive alignment in 1985, forcing Klecko to learn a new position,
nose tackle. He led the Jets with 96 tackles and five forced fumbles, and tied for second with 7.5 sacks to earn his second All-Pro selection, and become the second player, after
Frank Gifford, in professional football history to be selected to the Pro Bowl at three different positions. Klecko spent the 1986-87 offseason recovering from knee surgery. The knee hadn't fully healed by the start of the 1987 season, and he was limited to only seven games. After the season, the Jets released Klecko. He played one more season with the
Indianapolis Colts, who went 9–7 in 1988, including a 34–16 loss to the Jets. Following the season, Klecko retired due to chronic knee problems. ==Legacy==