Oostendorp is a graduate of the University of Iowa, where he wrestled for legendary coach Dan Gable and graduated with a B.A. in sociology in 1993. At Iowa, Oostendorp was a four-year starter at heavyweight, where he posted an overall record of 108-26 with 40 pins. He was a two-time All-American and Big Ten Champion for the Hawkeyes, placing fifth and third in the NCAA Championships.

Oostendorp also has considerable international experience. He was a member of the United States Greco Roman National Team from 1993-1998. His redshirt freshman year at Iowa, he won the Fila Jr. Greco Roman National Championship and represented the U.S. in the Fila World Championships placing fifth. In 1995, Oostendorp won the US World Team Trials and competed for the United States in the 1995 World Championships in the Czech Republic. He was the 1996 US Greco Roman National Champion and was the Olympic alternate at 100 kilograms after placing second in the final Olympic Trials.

"Our success has come from the attitude of the athletes that we are bringing into the program combined with the work ethic and commitment of our assistant coaches. We have created an environment for success built on the idea of bringing in student athletes who have very high goals and more importantly, are willing to make the commitment and sacrifices to attain them. Coe has a great deal to offer our student athletes, including an outstanding education and the opportunity to wrestle at a very high level."

Oostendorp has a daughter, Maci, and two sons, Jay and Jake.