Despite Sri Lanka capturing a historic Test series victory on English soil this week, the biggest story to emerge from the opening days of the summer is England's ongoing malaise under Alastair Cook.
Now eight Tests without a win, significant pressure surrounds England in the first phase of the nation's new era that is still feeling its way without Andy Flower, Kevin Pietersen and Graeme Swann.
But Cook and his teammates aren't the only players in Test cricket enduring difficult stretches of form.
Across the globe, stars of equal—and, in some cases, even bigger—stature are also battling with the unique and demanding challenges presented by the game's longest format.
Across the following slides, we examine 15 players who have slipped from previous standards.