CHATTANOOGA, Tenn. — The Chattanooga softball team retains its lead in the Southern Conference but must share it with Mercer after falling 6-3 to the Bears in the rubber game Sunday afternoon at Frost Stadium. Mercer drove in three runs in the seventh inning, including a two-run home run to break a 3-3 tie. Chattanooga moves to 30-13 overall and 10-5 in league play. Mercer improves to 21-23 on the year and an identical 10-5 against the SoCon. Olivia Lipari was 2-for-4 with two RBI. Kaili Phillips was 1-for-3 with a double and RBI and Baileigh Pitts drove in one…