Last year I dominated the regular season in my ESPN 10-team H2H 6x6 league (QS's and OPS were the extra categories). I got the #1 seed. Then the playoffs came around, and I made it all the way to the "World Series" round. On the first day of the two-week round, the guy I was playing against proceeded to drop all of his pitchers and pick up only pitchers pitching that day to accumulate QS's, K's, IP's and Wins. The next day he'd drop all of his pitchers and do it again. None of these pitchers were on his team the whole season, but he won because he turned over his entire pitching roster every day of the last week of the season, with no danger of his players being picked up by other teams since the season was over. Therefore, the entire value of the draft and mid-season moves were diminished, and I lost because I didn't change out my ENTIRE pitching roster EVERY day.
My question is: fair strategy, or bush league? Next season, would it be fair to lock all rosters at the start of the postseason except for bona fide injuries? Or, am I just bitter?