|High School:||Southridge HS '08|
2009: Listed as a backup at right offensive guard on EWU's preseason depth chart.
HS: Graduated from Southridge HS in 2008. Was selected by the Tri-City Herald as a second team All-Area selection. Earned first team All-Columbia Basin League 3A honors as a defensive lineman. As a senior, he helped lead Southridge to the quarterfinals of the WIAA State 3A Playoffs where it lost to Bellevue 37-10. Southridge finished the season 7-5 after starting the season 0-4. He also earned second team all-league honors on the defensive line as a junior and senior. In 2005, his school won the Big 9 Conference title. Antonson also played basketball and competed in track and field at Southridge.
Personal: Born 9/4/89 in Pasco, Wash. Will turn 20 one day before Eastern plays Western Oregon. Last name is pronounced "An-ton-son." Major undeclared, but considering math education. Name is pronounced "an-tone-son."