Unbeaten Marshfield plays Ontario Saturday, 2:15 p.m., in the semi-finals of the OSAA 4A State Football playoffs at Hillsboro Stadium.  The game will be broadcast live on FM 91.3 KMHS and streamed over the Internet worldwide.  Just go to the KMHS Radio or Marshfield High School websites to listen on the Internet.  The winner plays the winner of the Cottage Grove and Mazama game being played at Grants Pass High School, also Saturday for the 4A State Championship the following Saturday.