Hoying grew up in Mercer County, Ohio, attending St. Henry High School, where he won one football and two basketball state championships. He had college basketball offers from the University of Toledo and other colleges.
Hoying played college football for The Ohio StateBuckeyes. In 1993, as a sophomore, he was named The Ohio State Buckeyes starting quarterback, but shared snaps with Bret Powers, a transfer from Arizona State. By 1994, Hoying acquired firm hold on the starting spot.
In his career at Ohio State, Hoying completed 498 passes and 57 touchdown passes, both school records. He is third behind JT Barrett and Art Schlichter on the Ohio State career passing yardage list. He was an outstanding college student and was selected as an All Big 10 Scholar Athlete.
The following year, however, would be a complete disaster for Hoying as he was benched midseason after not winning a single game as a starter. He did not throw a touchdown pass and threw nine interceptions. The 3-13 season led to the firing of Eagles head coachRay Rhodes, and ultimately the hiring of Andy Reid. Reid drafted Donovan McNabb out of Syracuse University, and traded Hoying.
Hoying was traded to the Oakland Raiders in 2000, rejoining coach Jon Gruden who had been the offensive coordinator for the Eagles under Rhodes. After the season, he got to play in the AFC title game against the Baltimore Ravens in place of injured starter Rich Gannon, but his team lost the game 16-3. Hoying's 11 touchdown passes in 1997 would remain the only touchdown passes of his career. Hoying retired after the 2001 season following a severe elbow injury. He holds the NFL record for most pass completions in a season without a touchdown. 
Since leaving the NFL, Hoying has become a principal at Crawford Hoying, a full-service real estate company based in Columbus, Ohio.