Cool film. Thanks for sharing! I noticed they use men as practice partners - women's tennis does this as well. My DS would be good at this (he's a very good basketball player, but will probably top out at 5'11", maybe 6 feet), having been raised with 15 older sisters on the softball field.
The college I went to did the same thing, our fraternity was really big into sports...we won almost everything in intramurals, we scrimmaged both the girls basketball and volleyball teams fairly regularly. While the girls were very fundamentally sound it was hard for them to match up from a size, speed and athletic standpoint, most of our guys played high school sports and the scrimmages were pretty even although we probably gave better than we got most of the time