For anyone who has ever coached in tournaments that use similar tie-breakers, the problem is the tie-breaker system, not the coach. Any system that allows a team to gain an advantage by doing less than their best, is a flawed system. As a coach am I showing poor sportsmanship if I play my bench and rest my starters in pool play when I have the number one see wrapped up, but the game means my "weaker" opponent beats out another team?
The problem is the system, not the coach. And baseball/softball is a very tough sport to "call off the dogs". In football, you go off-tackle again and again. In basketball you don't press, you maximize the shot clock, you run a motion offense. In soccer you control the ball. But what do you do in baseball? You can't tell kids to play bad defense or to not try and hit the ball. So work on your bunting.