In Cindy's case, the prospect proposed another player. At no point was it presented as a take it or leave it. Just as many players will be pissed at you for calling a match for rain too early then to call it late. And nobody's happy when the matches are interrupted by rain and everyone has to find time to get all the same players back out there. Captains often sacrifice themselves at 1 singles or 1 doubles to give the team a better chance to win. You don't often run into players volunteering to be sacrificed. Have you captained a team? Sure doesn't sound like it. Regarding Cindy's original post - the vast majority of people don't have the stones to have an upfront conversation, or to really understand where they are in a roster's pecking order. They'd rather hide behind lame excuses or unanswered emails. That's fine - there's always someone else who wants to play, and if some other captain wants to take on that headache, more power to them.