England v Sri Lanka, 1st Test, Lord's, 2nd day
Mahmood shocks Sri Lanka after Pietersen's 158
Chaminda Vaas celebrates the dismissal of Matthew Hoggard, England's nightwatchman•Getty Images
Kevin Pietersen hammers one through the covers...•Getty Images
Pietersen celebrates his third Test hundred and first at Lord's•Getty Images
Pietersen laces another boundary after lunch•Getty Images
Not to be outdone, Collingwood pulls powerfully on his way to 57•Getty Images
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Two in two: Mahmood traps Thilan Samaraweera lbw for a duck as his dream debut continued•Getty Images
Paul Collingwood punches carefully off the back foot as England made a confident start to the second day•Getty Images
...off both the front and back foot as England dominated the morning session•Getty Images
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Muttiah Muralitharan rips another delivery, but there was little joy for Sri Lanka in the first two sessions•Getty Images
Pietersen acknowledges the crowd after falling for a superb 158, his equal-highest Test score: he made 158 against Australia in the final Ashes Test in September 2005•Getty Images
Down on one knee, Kumar Sangakkara drives elegantly through the covers and shone briefly...before falling for 21 as Sri Lanka made a disasterous start to their first innings•Getty Images
He brought up his hundred from just 129 balls•Getty Images
Collingwood cuts powerfully during his fifty•Getty Images
Not content with a hundred, Pietersen celebrates his 150•Getty Images
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Dream start: Mahmood dismisses Chamara Kapugedera, also making his debut•Getty Images