Some popular platforms where you can sell or trade NFT sports cards include NBA Top Shot, which specializes in selling NBA player NFTs, and OpenSea, which is a general marketplace for various types of NFTs. These platforms provide a marketplace for buyers and sellers to trade their NFT sports cards and moments.
NBA Top Shot allows users to buy, sell, and trade NBA player NFTs, which are essentially highlight clips that function as trading cards. OpenSea, on the other hand, is a larger marketplace that supports a wide range of NFTs, including sports-related NFTs. There are other platforms available where you can sell or trade NFT sports cards, so it's worth exploring different options to find the one that suits your needs.
Other platforms mostly do not allow trading cards to other platforms, but it is different from every one. - This could change in the future.
When selling or trading NFT sports cards, it's important to familiarize yourself with the specific platform's guidelines, fees, and any requirements for listing your NFTs.
Please note that the availability of platforms and the specific features they offer may change over time, so it's a good idea to stay updated with the latest information and explore multiple sources when considering where to sell or trade your NFT sports cards.