Buescher began his professional racing career in 2005, driving Legends cars in Texas for Speedway Legends, Winning over 100 races. (Speedway Legends, worked with several top drivers, David Ragan, Jonathan Davenport etc.) In 2008, Buescher moved to North Carolina to be mentored by NASCAR Sprint Cup Series driver David Ragan and signing as a development driver for Roush Fenway Racing, Buescher began competing in ARCA competition in 2009; he went on to win the series championship in 2012, becoming the only driver ever to compete every lap in a season of competition in the series.

Buescher made his debut in NASCAR competition for Roush Fenway Racing in 2011, driving two races in the Nationwide Series; he returned to the series in 2013, driving in seven races for the team, in addition to a limited ARCA schedule with Roulo Bros. Racing.

In 2014, Buescher moved full-time to the Nationwide Series, driving the No. 60 Ford for Roush Fenway Racing. After failing to qualify at Daytona, Buescher had a solid rookie season, finishing ninth at Las Vegas, 7th at Richmond, second at Talladega, ninth at Charlotte, 11th at Dover, tenth at Michigan, and 12th at the July Daytona race. Buescher finished fifth at New Hampshire to earn a spot in the second Nationwide Dash 4 Cash race at Chicagoland; he would finish 8th at Chicago and 11th at Indianapolis. Fastenal returned to sponsor the 60 at Iowa, where Buescher finished 14th. Cup sponsors Kellogg's and Cheez-It sponsored the car at Watkins Glen. Buescher won the Nationwide Children's Hospital 200 at Mid-Ohio on August 16, his first career win.

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