May 29—Already in possession of a state tournament ticket, Jamestown's Phoebe Olson has a chance to add "conference champion" to her resume here on Saturday. Olson will face Mandan's Elizabeth Felderman in the semifinals of the West Region girls tennis singles tournament beginning at 10:15 a.m. inside Jamestown's Two Rivers Activity Center. Olson is 1-1 against top-seeded Felderman this .