Oregon State and coach Gary Andersen have mutually agreed to part ways, effective immediately, with the Beavers off to a 1-5 start.
The school announced the split in a news release Monday, two days after a 38-10 loss at Southern California. Oregon State did not have a victory against an FBS team this season.
"This was something that evolved between the both of us," athletic director Scott Barnes said.
He said the conversation with Andersen got to a point Sunday "where we made a final decision."
Cornerbacks coach Cory Hall was named interim coach. The Beavers face Colorado at home on Saturday.