Petr Cech has taken to Twitter to concede his nightmare Arsenal debut against West Ham was "not in the script".
The former Chelsea goalkeeper - tipped to be the difference as Arsenal bid for a first league title in 12 years - was culpable for both goals as his side lost their Premier League opener 2-0.
Cech flapped at a Dimitri Payet free-kick to allow Cheikhou Kouyate to head home just before half-time and reacted slowly to a long-range Mauro Zarate strike after the break that doubled West Ham's lead.
"First game like this was not in the script - Mistake and no points," he tweeted.
"But tomorrow is another day to get ready for the next game! #COYG"
Arsenal travel to Crystal Palace next Sunday.
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