Back In The Saddle wroteI've also started using "replaces" instead of "for" since this discussion.
As a note of caution... "replaces" might not be the best choice of words simply because you're now talking (technically) about a Libero action. As you already know, a substitution "subs" and a Libero "replaces." As an R2, I fly those subs in and out to maintain the momentum of the match, and then I'll turn back to my SK and give them the numbers (this is all talked about in my pre-match with the SK). I would be slightly concerned that my score keeper might not record the sub if they hear me say "replace," especially if the SK has several things going on i.e. LOR & multiple subs on both sides.
I've been using "for" as well, I'll try the pause... but Felix, what other suggestions do you have? Did you say there are 2 recommended options? I might as well get used to a good habit right away. By the way, congrats on getting your National ranking.