So you could burn your only two starters in the same WC game? I think they'd be better off trying to piece together a bunch of bullpen pitchers and hope the offense could carry them to the NLDS where Lester could start 2 games. It's obviously a drastic emergency move. If you lose, there are no other games to worry about who pitches. When do the rosters have to be set? I was thinking more if Arrieta gets hurt (God forbid) early in the game or something. I wasn't considering a scenario where he wakes up with the flu on game day and has to be scratched. That makes more sense then to have Lester on the roster for the WC game.