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An "Hour" of tennis.
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11-20-2012, 07:28 AM
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maggmaster
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Join Date: Dec 2010
Posts: 906
I hit for an hour every day on the ball machine and average about 700 balls, that is far different than playing doubles. I count the ball machines as 1.5 hours, hitting with a partner as 1, singles as 1 and doubles as .75
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