Matt Prior has had the worst series of any England player. He has really struggled to make an impact, averaging just 14 runs.
His struggles extend past this series, having also failed against New Zealand earlier in the summer. His poor patch of form ironically arrives after being named as England's Player of the Year prior to the season.
However, as is the case with Jonathan Trott, Prior's record is too good to ignore. He has proven to be one of England's most valuable players in recent times with both bat and gloves, not to mention the fact that he has become particularly useful in utilising the Decision Review System.
Brad Haddin is a worthy competitor for the keeping slot, and has had an okay series, but Prior's class gets him in.