CORVALLIS — Oregon State baseball head coach Pat Casey announced Tuesday that 12 players have signed national letters of intent to join the program starting with the 2014 season. Eleven of the 12 players hail from the high school ranks, with the lone junior college signee, infielder Justin Bohn, coming from Feather River Junior College. Of the 11 high school signees, six are listed as pitchers. They are right-handers Tanner Draper (West Jordan, Utah), Chandler Eden (Yuba City, Calif.), Kevin Flemer (El Cerrito, Calif.), John Pomeroy (Mossyrock, Wash.) and Jake Thompson (Florence). The lone left-handed pitcher is Lafayette, Calif., native, …