Some of the most prized baseball cards are rookie cards. They include some of the greatest players who ever played the game.

and Topps released a graphic featuring some of the notable players' most expensive sports cards. A thread of record baseball card sale prices of players in the World Series… pic.twitter.com ...

Home run baseballs are some of the most coveted pieces of memorabilia among MLB collectors. While baseball cards have always ... Here's a closer look at the most expensive baseballs ever sold.