LONDON - Arsenal manager Arsene Wenger is expecting a stern challenge for his Premier League leaders when they travel to West Bromwich Albion on Sunday.
The Gunners will be bidding for an 11th straight win in all competitions when they arrive at The Hawthorns.
But that sequence includes a League Cup victory against the Baggies where it needed a penalty shoot-out to separate the sides.
West Brom caused one of the upsets of the season so far when they won 2-1 away to champions Manchester United last weekend.
"They had quite a strong side out (in the League Cup) and many of the regular players played, but they have a big squad," Wenger said.
"I noticed when I looked at their team who played at Manchester United, that they have a massive squad of experienced players, so it's very difficult to predict who will play against us."
Meanwhile Wenger felt compelled to admonish Arsenal's Jack Wilshere after the England midfielder was spotting holding a cigarette outside a London nightclub in midweek - although the player himself insisted this was a "prank" and that he wasn't a smoker.
Wilshere came on as a substitute in Arsenal's 2-0 Champions League victory over Napoli on Tuesday and Wenger gave his players permission to enjoy themselves the next day.