The 2026 Topps UFC Knockout MACKENZIE DERN Knockout Autograph Relic #/299 #KAR-MD is a highly sought-after sports trading card featuring an autograph from UFC fighter Mackenzie Dern. This limited edition card is part of the 2020 Topps UFC Knockout set, with only 50 copies in circulation. The card also includes a piece of memorabilia from Dern, adding to its unique appeal. With a blue parallel variety, this card is a must-have for any MMA fan or collector looking to add a rare and valuable piece to their collection.