Shaun Pollock was lightning-quick in his younger days y'know. It's easy to think of him as the brilliant line-and-length merchant he was just before he retired, but he wasn't always that way.
Shaun Pollock was only lightening-quick for perhaps a year, maybe 18 months. He had a serious ankle injury in 1997 and thereafter was only ever early\mid-80s with the occasional ball up at 90, which he retained the ability to bowl until about 2002, 2003 or so (though even at 85mph he could still bounce people out occasionally because of his awkward angle).
Michael Atherton always talks of him being probably almost as quick as Donald (and, unlike Donald, someone he never felt he should try to play the pull and hook strokes to, because of the angle I mention above) in that first series in 1995/96. However, by 1998, when reliable speedguns were first used, Donald outpaced everyone on both sides comfortably, even at the age of 32.
BTW, don't get the idea that Pollock wasn't a superb line-and-length merchant even while he was also very quick. Like Curtley Ambrose and the Glenn McGrath of his first 5-6 years, Pollock had that exceptionally rare ability to hit a dinnerplate-sized spot on the pitch again and again
and bowl genuinely fast. And, unlike McGrath and Ambrose, to regularly swing the ball. He was precious little less accurate early in his career than late.