Guppy was a two-sport athlete at Chino Hills High School, where he played four years of soccer under head coach Kyle Shuler, earning All-Sierra League accolades his last two years and being named team MVP in his freshman and sophomore campaigns.

In addition, he earned third-team College Soccer News All-Freshman, first-team All-Big West Conference and Goalkeeper of the Year honors in his first season at Northridge.

During his college years Guppy also spent three seasons with the San Fernando Valley Quakes of the USL Premier Development League, helping them reach the PDL playoffs in 2007[2] and 2008,[3] and making 43 career appearances overall.

He was called up by the Portland Timbers in March 2011 for their US Open Cup game – ironically against Chivas USA – as cover for the injured Troy Perkins and Adin Brown, but did not feature in the game,[7] and has been training with Los Angeles Galaxy for the majority of the rest of the 2011 season.

He currently works as an emergency medical technician, and resides in Fullerton, California, with his wife Brittany Van Voorhis.