Watched Major League Again..Is Ricky Vaughn a starter or reliever in the 1st Movie?

I always thought he was a starter, though when he faces Haywood in the 9th inning at the end, Harry Doyle says that he has homered the only 2 times he has faced Vaughn. Considering they are in the same division, how would he have only faced him twice? In the 2 games they show he would have batted 2-3 times each game against him in those alone.