He said it was a 2 lb weight that is used to warm up and strengthen his swing – like baseball batters and golfers use. The concept is in line with the piece on this blog (“Practice Swings” November 26, 2013), recommending tennis players use this technique.
I do not have one; but the device is available at Amazon.com for $18 + shipping.
Has anyone used it or a device like it??
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