By Tim RathSports EditorPhoto credit: Bob Knoska/The Oakland PostSister, sister?The twin tandem of sophomore midfielders Melissa and Meghan Hartwig each scored a goal as the Oakland University women's soccer team rolled over Western Illinois Friday by a score of 4-0.Meghan Hartwig scored the game-winner at 53:41 in the second half off of a give-and-go in the box, courtesy of an assist from freshman midfielder Sarah Lynch. The goal marked Hartwig's second of the season.Amy Trandell added onto the lead at 64:17 after a one-touch in the box, with the assist going to Jessica Boyle. The goal was Trandell's third of the season. Kristi Smith scored unassisted at 74:17 to push the lead to 3-0 and Melissa Hartwig finished off the onslaught at 85:08 with an assist from Carella DiMaggio.Senior goalkeeper Kim Herbst blocked two shots in the game to earn her third shutout of the year.The win pushes the Grizzlies' record to 5-8-2, 4-1 Summit League, while dropping Western Illinois to 5-7-2, 1-3 Summit League.OU will next take the field Friday at 4 p.m. as they host South Dakota State, who are undefeated in Summit League competition (6-0) and stand 10-3-0 overall.