MOUNT VERNON — Arlington’s Katelyn McDonald doubled twice and finished 3-for-4 as the Eagles concluded the regular season with a win over Mount Vernon. Gabby Factor batted 3-for-4 for the Bulldogs.At Mount Vernon H.S.Arlington 202 240 0 — 10 8 1Mount Vernon 250 000 0 — 7 9 9Madeline Maclean and Jennifer Kellogg. Gabby Factor, Paityn Cyr (2) and Kailey Hanger. WP—Maclean (7-4). LP—Cyr (5-7). 2B—Katelyn McDonald (A), Alyssa Crain (A), Katin Romero (MV). Records—Arlington 8-6 league, 11-9 overall. Mount Vernon 2-12, 5-13.