Jadin O'Brien, a junior at Notre Dame, finished fourth in the women's elite heptathlon with a lifetime-best 6,115 points at the 64th Mt. SAC Relays Presented by Nike at Hilmer Lodge Stadium in Walnut, Calif. O'Brien improved from her performance of 5,942 points last year at the Clyde Littlefield Texas Relays. O'Brien was the top collegiate athlete in the field, capped by a 2:15.16 effort in the 800 meters.