You can find Jacob deGrom rookie baseball cards here including his valuable Topps autographed rookie cards. Jacob DeGrom rookie cards are found in Topps Inception, along with his rookie and insert on-card autographs including ones serial numbered as low as 1/1. The Mets rookie is a strong player and you can find many 2015 rookie cards here. It will be about $30-$40 for a rookie autograph of him.