Experienced Arsenal player, Theo Walcott says the arrival of the former Chelsea shot stopper; Petr Cech at the Emirates in the off-season has completely changed the club's back four.
Arsenal are in one of their best shapes in recent times and are already being touted as one of the favourites to win the English Premiership this season with Cech, keeping his seventh clean sheet of the season in the club's 2-0 win against Aston Villa on Sunday.
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With Arsenal boasting of the second best defensive record in the Premier League, one would definitely agree with Walcott who has hailed the impact of the 33-year-old goalkeeper on the back four of the Gunners.
The Gunners go into a crunch home encounter against third-placed Manchester City on December 21 which could further boost their fortunes if they win.