You can see the dirty spot in one of the images in the heel area. The shoes made specifically for those events.
adidas Throwstar Shotput Discus Shoes New W/ Cosmetic Defect US Men SIZE 14
adidas Throwstar Shotput Discus Shoes New W/ Cosmetic Defect US Men SIZE 13
adidas Throwstar Shotput Discus Shoes New W/ Cosmetic Defect SZ Men 10 WMNS 11.5
adidas Throwstar Shotput Discus Shoes New W/ Cosmetic Defect SZ Men 11 WMNS 12.5
adidas Throwstar Shotput Discus Shoes New W/ Cosmetic Defect SZ Men 11.5 WMNS 13
