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Pattinson's 47 wickets @ 24.65 were beaten in both number and average by Ryan McLaren (49@23), Steve Harmison (60@22) and Callum Thorp (50@19) so i don't know which figures you were looking at. There were better figures than Pattinson too for James Tomlinson (67@24.76), Glenn Chapple (42@20.5), Mark Davies (39@15) and Imran Tahir (44@16).
Looking outside the top division, Kabir Ali took 59 wickets @18 and Chris Woakes 42@20.
Imran Tahir is a Pakistani leg spinner who isn't qualified to play for England
By the time the Headingley test rolled around Woakes had played a sum total of 3 games for the season and 6 FC games his whole career with figures of 2/64, 3/30, 2/33, 5/59,2/59, 0/26. If there is anything worse than picking a 29 year old with little FC experience, its picking a 19 year old with half as much experience.
Thorp is 33 years old and Australian, dont think hes ever been considered a prospect for England.
Ryan Mclaren is not qualified to play for England.
James Tomlinson has a horrible FC record.
Davies was injured around this time, and has barely managed to put together one fully fit season in his entire career.
Chapple was 34 and his career for England is well over.
That leaves Harmison, Kabir Ali, Hoggard and Jones (the latter 2 I have added because they were either in with a genuine shout or should have been in with a shout for a place in the side).
Harmison as we all know has and continues to be in and out of the side like a paying guest, and his inclusion at the time would probably have been greeted with as much grief from the public at the time given that he had only just been dropped during the winter.
Jones, according to some sources, was who Vaughan wanted to have in the side at the time, but Moores was against which led to the rift and the eventual resignation of Vaughan. However, Jones hadn't prove his fitness over a longish period.
Hoggard and Ali should have been in the side ahead of Pattinson, that is something that was patently obvious at the time and I stated as such around then as well. But as you can see, Pattinson's selection is far from the 'worst ever selection' as people seem to make it out to be.