Phil Jagielka became one of the country's best central defenders shortly after Everton signed him from Sheffield United in 2007. His performances for club and country have been immense. He's a tough defender, willing to put himself in dangerous situations and he maintains a good positional sense.
Jagielka has won 66% of his duels in the 2012/13 season and he has even scored twice. His defensive errors have been kept to a total of four, but that's mostly down to his willingness to make risky decisions.
The defender was also Everton's captain last season and one of the team's most influential figures.