WINSTON — Miranda Mendenhall scored 15 points and the Sutherlin High girls basketball team extended its winning streak to 18 overall and four in Far West League play Friday with a 53-37 win over Douglas. Kayce Mock contributed 14 points for the second-ranked Bulldogs and Ricki Mock eight. Kat Miller paced Douglas with 15 points and 11 rebounds. The Trojans were within three points at halftime, closer than any team has been all season. SUTHERLIN (53) — Miranda Mendenhall 15, K. Mock 14, Carson 9, R. Mock 8, LeFevre 6, Merrifield 1, Clarno, Hults. Totals 21 6-17 53. DOUGLAS (37) …