Using #1 Waiver to block opponent in fantasy football?

The problem with your strategy is that the only really bad option for your opponent this week is to go with Collins/Young. No team has allowed fewer fantasy points to opposing QBs than the Chargers. However, the others all have some possibility to score. Especially Kitna who you didn't mention. The Jags have already allowed 1856 ping yds and 16 ping TDs to opposing QBs plus 1 rushing TD. There's a reason that Kitna isn't a regular starter, but it isn't because he can't put up fantasy points. Oakland has allowed allowed 1856 ping yds and 14 ping TDs. The Chiefs and Cards aren't much better. I wouldn't bother with this move.