In 2000 he captured the Rolex Sports Car Series GTO class championship in a Saleen Mustang.
The following year he drove a Saleen S7R in the American Le Mans Series and won the GTS class championship.
The following year he returned to the Rolex series and captured SRP II class honors in a Lola-Nissan.
The following year he won the 24 Hours of Daytona with teammates Christian Fittipaldi, Forest Barber, and Andy Pilgrim in a Pontiac powered Doran and finished 9th in the championship.
He also finished out the Rolex Sports Car Series season in the Autohaus Motorsports GT class Pontiac GXP.R Borcheller has raced at Le Mans five times with a best finish of 3rd in class in 2001 with the Saleen S7R.