I once had a conversation with a former men’s club teammate who is now an NCAA Division I head coach. His name is Steve. We talked about what it takes to consistently win sets, and thus matches. It revolved around the idea of points scored vs. points given away.
Steve had done some off-season research reviewing a season’s worth of conference matches. He found that teams scoring 18-19 points of their own through kills, blocks, and aces frequently won. The rest of the points from there to 25 would come from opponent errors. That’s hits into the net or out of bounds, ball-handling errors, missed serves, etc.
Now, this was a very specific set of figures related to a certain level of play. These figures don’t apply to everyone. For example, at lower levels one would expect teams to commit more errors. That means fewer positive points are required to win your average set. It is worth doing some research to figure out what the plus points/minus points ratio is like at your level for winning vs. losing teams.
The reason it’s worth having this kind of information is it lets you figure out what sorts of things you need to prioritize in your training and/or match preparation. If, for example, you aren’t getting enough plus points then you’re probably going to have to work on strengthening your offense somehow. That’s because kills are the biggest factor there. If scoring plus points isn’t an issue, then the focus might need to be on avoiding the minus points. That means reducing errors. You should also look at keeping the other team from generating plus points. This is done through better defense, or perhaps more aggressive serving.
These are the sorts of things which should go into the on-going assessment process for competitive teams. I always look at them for the teams I coach.