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It's likely that Lee Westwood's inclusion on this list will strike a chord with many ardent golf fans, but the fact remains that in comparison to many other former No. 1's, the Englishman's resume just doesn't stack up.
Let's start with the fact that Westwood hasn't won any major championships. His best year was 2010, when he notched a T2 at both the Masters and Open Championship, and he did finish in the top-ten at this year's Masters and U.S. Open, but other than Luke Donald, Westwood is the only world No. 1 to have never won a major.
In terms of total time spent as a world No. 1, Westwood again falls in the bottom-tier of his peers, as he held onto the spot for 22 weeks in total, most of them coming in the 2010 offseason.
Of the 16 world No. 1's, multi-time major winners Ernie Els and Bernhard Langer have held onto the ranking for fewer weeks than Lee, which tells us that sometimes, getting the top spot is a matter being in the right place at the right time.
There's no denying that Westwood has had a splendid career on the European Tour and a consistent showing in major championships, but these are not the attributes of a world No. 1.