Previously this season he was in charge when we lost at home to Watford and when we won away at Palace, famously sending off Aaron Cresswell for two harsh / incorrect yellow card offences in one minute. (westhamway.net)
It's also true that Xhaka committed two clear yellow card offences, the most blatant being the one that Dean didn't book him for. (justarsenal.com)
Peers was dismissed by referee Ben Connolly for a second yellow card offence with three minutes remaining. (bbc.com)