For many years, freshman boys at Oregon State were required, per campus tradition, to wear "rook lids" - also known as "freshman beanies" - on certain days of the week. At the conclusion of the school year, freshmen students often burned their beanies at a ceremony called "The Burning of the Green."
Prior to the beginnings of varsity baseball in 1907, Oregon State played baseball on an occasional basis beginning as early as 1883. In 1899, the school began playing an indoor version of the game. In 1900, the indoor baseball team compiled a 3-1 record, which included wins over the University of Oregon, Albany College, and the Salem YMCA. Players included: Arthur Derby, Hamilton, Arthur Bier, Small, Ellwood Clark, Grant Elain, Raymond Henkle, Ruben Burgess, Harold Belt, and Jim Hartley.