Tour pros have a more consistent tempo than you. They all seem to swing at a 3:1 ratio (time of backswing to time of downswing). When they hit poor shots, they don't have that 3:1 ratio. The tempo ratio for short game shots is 2:1 (not 1:1 or 1:2 which some major coaches tend to promote). Luckily the guys at Tour Tempo have developed an iphone app so that you can train your swing to achieve that perfect tempo ratio.

This study performed at Yale University confirms the Tour Tempo findings.
http://www.tourtempo.com/yale.pdf
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