Yeah, as mentioned, it's the libero. There are restrictions depending on the level on how the position can be used. Some levels say that position can never serve nor play on the front line, others allow serving but not front line, others allow front line, but not attacking (which, WTF?). The change in the college game came while I was working with the U of M's volleyball team in the early 2000s. It wasn't received well there, though the first one at the U of M (whose name I'm forgetting at the moment) was the sweetest girl you could ever meet who never would have played at that level without that position being created, so it was hard to really be too upset that she got a chance to play college volleyball. I am a huge fan of court volleyball. I was lucky to get to work with the Gophers when they went from a solid program to one of the elite programs in the nation and have remained one of the best in the nation for many years since. It was also the first sporting event at the U of M after 9/11. I was honored with being the person who sang the anthem that evening.