Yes, a runner was on second, and yes, Polanco deflected it, but to me, holding the line does not include giving up what would be the winning run of the game, and that was Coulombe's inherited runner scoring. Sure, you can ignore it and minimize it especailly with all the other plays in the game, and it was charged to Maeda ...... but.... to me, a reliever does his job when he is brought in with runners on and only needs one out, and gets it, instead of giving up a hit to the first batter and the inherited runner scores.