408 × 612
Source:https://www.istockphoto.com/photo/tennis-ball-on-purple-background-gm1053185430-281378723
800 × 1200
Source:https://bundlexjoy.com/products/bundle-x-joy-tennis-ball
1600 × 1500
Source:https://www.shutterstock.com/image-photo/exotic-purple-tennis-ball-sport-background-334596155
900 × 900
Source:http://dog-insider.com/listing/wild-one-6-tennis-balls-lilac/
800 × 800
Source:https://www.gopuff.com/p/wild-one-lilac-tennis-ball-4pk/p79688
1000 × 750
Source:https://www.redbubble.com/i/sticker/purple-tennis-ball-by-katelyndbyrd/58883021.EJUG5
2828 × 2828
Source:https://www.qualitylogoproducts.com/pet-promo-products/pet-toy-tennis-ball.htm
3000 × 2400
Source:https://wildone.com/products/tennis-balls
294 × 350
Source:https://www.amazon.com/JY-CLASSIC-Training-Practice-Playing/dp/B0BKD51PJG
644 × 480
Source:https://www.abel-wellness.com/product-page/big-great-dane-tennis-ball