New York Giants Kupp was selected by the
New York Giants in the 5th round (135th overall) of the
1990 NFL draft. He was the ninth quarterback taken. He was released before the start of the season on September 3, after not being able to pass
Matt Cavanaugh on the depth chart.
Phoenix Cardinals In September 1990, Kupp signed with
Phoenix Cardinals and spent the rest of the year on the
practice squad. In 1991, a training camp knee injury to starting quarterback
Timm Rosenbach, allowed Kupp to gain additional playing experience. In his only professional football game, Kupp completed 3-of-7 attempts for 23 yards in the fourth quarter of the Cardinals' 34–0 loss to the
Washington Redskins in week 3. On November 6, 1991, he was released to make room for quarterback
Chris Chandler.
Dallas Cowboys On November 7, 1991, Kupp was claimed off waivers by the
Dallas Cowboys. After starter
Troy Aikman suffered a knee injury in the twelfth game against the
Washington Redskins, Kupp ascended from third-string to backup quarterback behind
Steve Beuerlein. In 1992, Kupp was one of three Cowboys players to be allocated to the
World League of American Football. He spent the first six weeks of the season with the
San Antonio Riders, having scant action, before being acquired by the
Montreal Machine, where he spent the remainder of the season as a backup. He made 11-of-27 completions for 138 yards, one touchdown and 4 interceptions. He was released by the Cowboys on August 31. ==Personal life==