Agreed.
Regardless of everything else, there is just no way we should be conceding 3 goals in that game. All three were just basic lapses in concentration by various players.
Mertesacker and Cech are the best at that, both of them should've been on the pitch today imo.
Walcott was poor but I'm not so miffed about the selection decision, he was excellent in the reverse fixture in that position and also against Man City earlier in the season. Just annoyed that he was so sh*t today. Bet that would've annoyed Giroud too.