Video: Agassi, Graf and Michelle Obama in tennis PSA

Andre Agassi and Stefanie Graf teamed up with Michelle Obama to film a collaborative public service announcement between the first lady's "Let's Move" campaign and the USTA.

As far as PSAs go, this is an entertaining one, particularly the facial expression delivered by the first lady when she's shushed by the little girl. Although, one can't help but think those two children would be getting more exercise if Agassi wasn't there to retrieve their balls.

The spot debuts Monday night during Agassi's charity match against Pete Sampras and will air through the U.S. Open series this summer.

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