CHARLESTON, S.C. — If the fourth-seeded Georgia Southern Eagles wanted to advance in the 2014 Southern Conference tournament, they needed to get past No. 1 seed Western Carolina in an elimination game Thursday.The regular-season champion Catamounts took a seat, and the Eagles remain standing.GSU mashed four home runs off WCU starter Jeremy Null to advance with an 8-4 win at Riley Park.The Eagles again face elimination today when they play at 3 p.m. Their opponent was undetermined at press time. The winner of today’s elimination game earns a bye into Saturday’s semifinals.GSU (35-21) was facing elimination after Wednesday’s extra-innings, 3-2 loss to No.