For pro basketball cards, there typically is no better selling marker than an NBA Finals appearance, especially for star players and Finals MVP candidates. However, we're always careful not to make blanket statements when it comes to advising you when to sell certain athletes, because it all depends not only on what particular cards you own, but how much money you're into them for.

And what can make things even more perplexing is that guys like Jayson Tatum and Luka Doncic have had NBA Finals baked into their pricing, and aren't necessarily seeing the rise we would have expected - especially for Tatum as the Celtics are up 3-0 as of this writing and look to clinch the Larry O'Brien Trophy ASAP.

That said, now is still the time to look to sell cards of Luka, Tatum and even Kyrie Irving, Jaylen Brown, Kristaps Porzingis, Dereck Lively and other supporting cast members for both the Celtics and Mavs.

Let's dig into the data to help you recognize opportunities to list cards for sale.