![Queen Maxima, right, plays tennis during festivities marking King's Day in Amstelveen, near Amsterdam, Netherlands, Saturday, April 26, 2014. The Dutch celebrate the first ever King's Day, a national holiday held in Queen Maxima, right, plays tennis during festivities marking King's Day in Amstelveen, near Amsterdam, Netherlands, Saturday, April 26, 2014. The Dutch celebrate the first ever King's Day, a national holiday held in](https://c8.alamy.com/comp/2P4GTM8/queen-maxima-right-plays-tennis-during-festivities-marking-kings-day-in-amstelveen-near-amsterdam-netherlands-saturday-april-26-2014-the-dutch-celebrate-the-first-ever-kings-day-a-national-holiday-held-in-honor-of-the-newly-installed-monarch-king-willem-alexander-kings-day-replaces-the-traditional-queens-day-ap-photofreek-van-den-bergh-pool-2P4GTM8.jpg)
Queen Maxima, right, plays tennis during festivities marking King's Day in Amstelveen, near Amsterdam, Netherlands, Saturday, April 26, 2014. The Dutch celebrate the first ever King's Day, a national holiday held in
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Kids Tennis Racket Starter Kit for Children from 4 Years and Under with Shoulder Strap Bag Mini Tennis Racket Toddler Tennis Raquet 17 Inch : Amazon.nl: Sports & Outdoors
![Igor Sijsling, of the Netherlands, serves against Victor Estrella Burgos, of Dominican Republic, during the first round of the 2014 U.S. Open tennis tournament, Tuesday, Aug. 26, 2014, in New York. (AP Igor Sijsling, of the Netherlands, serves against Victor Estrella Burgos, of Dominican Republic, during the first round of the 2014 U.S. Open tennis tournament, Tuesday, Aug. 26, 2014, in New York. (AP](https://c8.alamy.com/comp/2N46G4X/igor-sijsling-of-the-netherlands-serves-against-victor-estrella-burgos-of-dominican-republic-during-the-first-round-of-the-2014-us-open-tennis-tournament-tuesday-aug-26-2014-in-new-york-ap-photodarron-cummings-2N46G4X.jpg)