110-minute rain delays usually kill momentum. Hitters are cooled down, pitchers are tightened up and both teams have to restart their timing from scratch. For Virginia Tech first baseman Michelle Chatfield, it was just a warm-up. After a soggy start to the afternoon, Chatfield erupted for a historic afternoon, launching three home runs and driving in a program record nine RBIs as the No. 16 Hokies (40-9, 14-6 ACC) trounced North Carolina (31-17, 9-14 ACC), 14-5, in five innings on Saturday at Tech Softball Park. "That's cool," Chatfield said of the RBI record. "A record is there for whoever to see, but I'm more happy about the team win." Before the near two-hour delay, the Tar Heels struck first, scoring three runs before Hokies left-handed pitcher Emma Mazzarone recorded an out. Carolina third baseman Shelby Barbee did the damage, lacing a bases-clearing double down the right-field line, ending Mazzarone's day as the delay set in. Mazzarone exited allowing three earned runs on two hits with two walks.…