He was selected by the
New York Jets in the first round (10th overall) of the
1985 NFL draft. Toon made three catches for 67 yards in his first game against the Buffalo Bills in the 2nd week on September 15. He made a catch in eleven games, with his first touchdown being against the Indianapolis Colts on November 3 on a 17-yard catch from
Ken O'Brien. His first big game came the following week with 156 yards on 10 catches against Miami, the most yards and receptions he had the whole season. In total, he caught 46 passes for 662 yards and three touchdowns. In the playoffs that season against the
New England Patriots, he caught nine passes for 93 yards in the 26–14 loss. He had a breakout performance the following year, catching 85 passes for 1,176 yards with eight touchdowns. He was named an All-Pro and to the Pro Bowl while leading the team in receptions, which he would do for the next five seasons. In the Wild Card game that year, Toon caught four passes for 48 yards, which included a touchdown in the second quarter in the 35–15 victory (which ended up being the only postseason victory for Toon as a player). In the Divisional Round against the
Cleveland Browns, he caught five passes for 93 yards in the 23–20 loss in double overtime. His large stature in physicality and prowess as a blocker made him a suitable target on a variety of tough assignments for catches. The following season, he caught 67 passes for 976 yards for five touchdowns in twelve games. He was named to the Pro Bowl once again. The following
1988 season, he caught a league high 93 passes for 1,067 yards and five touchdowns while being named to the Pro Bowl and an All-Pro. He was the first Jet to lead the league in receptions since
George Sauer in 1967; Toon is currently the last Jet to lead the league in receptions. He played in just eleven games in 1989, catching 63 passes for 693 yards with two touchdowns. He caught 57 passes for 757 yards in 1990 with six touchdowns under new head coach
Bruce Coslet, who called Toon a "consummate team player" while naming him team captain. He closed out his last full season in 1991 with 74 catches for 963 yards with no touchdowns. Toon made his last playoff appearance in the 1991 Wild Card game against the Houston Oilers. He caught a 10-yard touchdown pass from O'Brien to tie the game for the Jets in the second quarter, but the Jets lost 17–10. Toon caught eight passes for 96 yards. He played in just nine games in 1992 and caught 31 passes for 311 yards and two touchdowns. Toon suffered a concussion against the
Denver Broncos after a hit by
Michael Brooks on November 8 during a reception that he caught, which went for eight yards while making it 101 straight games with at least one catch as a player. The hit knocked him unconscious and out of the game, which ended up being his last. On November 28, 1992, Toon announced his retirement from the league, doing so after hearing from a handful of doctors that had each told him that he should not risk another blow to the head, as he had suffered five concussions in the last six seasons and nine in his career. He had set franchise records for receptions in a season (93) and consecutive games (110) at the time of his retirement. He was second in receptions (517) in team history to
Don Maynard and third to Maynard and
Wesley Walker in receiving yards (6,605). Toon is one of two retired players in NFL history to play fewer than 110 games and still record over 500 receptions. The other is Hall of Famer
Kellen Winslow Sr. Toon had more catches in his first five seasons (355) than any player in league history and reached 400 receptions in 81 games, which was third only to Winslow and
Lionel Taylor (each 72) in history. In 2011, he was selected to the Jets Ring of Honor. ==After football==