(LEAD) Nexen Heroes defeat SK Wyverns to force deciding Game 5 in postseason series

(ATTN: ADDS details throughout)

By Yoo Jee-ho

SEOUL, Oct. 31 (Yonhap) -- The Nexen Heroes have forced a deciding Game 5 in the penultimate postseason round in South Korean baseball, defeating the SK Wyverns 4-2 at Gocheok Sky Dome in Seoul on Wednesd