Career
He played flanker, number eight and lock. Schubert earned 49 caps (50 test matches) for the United States. national team from 2000 until 2008. At the time of his international retirement, Schubert was the third most capped United States. player of all time, and Schubert had started in 49 tests at the backrow positions, a United States. record that Schubert held until broken by Todd Clever in 2013.
He was named 2001-2002 University of California (Berkeley) Athlete of the Year.
Schubert started all four matches for the United States during the 2003 Rugby World Cup, scoring 3 tries for the United States, a United States of America Rugby World Cup record. Schubert earned 48 caps for the American side from 2000 until 2006, before injury issues arose.
As of 2006, Schubert was the third most capped United States player of all time. He did not play for the United States during the 2007 Rugby World Cup.
He received one more cap in 2008, before retiring with 49 caps for the United States Eagles and scored four tries (20 points).
Schubert joined the Welsh side Cardiff Blues in the Celtic League in August 2004 where he played until 2006. Following knee surgery, Schubert joined the Cal coaching staff from 2007 to 2008 as an assistant to head coach Jack Clark.