Shaun Pollock knows a thing or two about pace bowling.
The former South Africa seamer - who is part of the Sky Sports commentary team for The Oval clash between his countrymen and England - took 421 wickets from his 108 Tests and regularly claimed the scalps of the planet's top batsmen.
During the lunch interval on day one of the first Test, Pollock gave his guide to quick bowling and explained how best to generate deviation off the seam, while he also analysed the bowling technique of South Africa hotshot Dale Steyn.
Hit the video above to hear what the Proteas legend had to say...
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