WILLIAMSBURG, Va.— Mary Grace Dunigan posted her second consecutive top-five to open the spring season as the William & Mary women’s golf team finished sixth of 10 th teams at the Kingsmill Intercollegiate at Kingsmill’s River Course. The event, which was 54-holes over Monday and Tuesday, was won by Boston University at 63-over, while Christy Chen of the Terriers was the individual champ at 6-over. Dunigan finished in third and just two shots behind Chen at 8-over, with them both entering the final round with a share of the lead. Dunigan posted an even-par 72 in Monday’s second round to…