You need a membership at ESPN Insider so no link: According to ESPN Asante Samuel is the NFL's worst tackler. Every player on the back 7 or 8 was graded, ( Linebackers, Defensive backs ). Jason Allen was the best DB tackler with 55 tackles and a 0.00% blown tackle rate. Asante Samuel was the NFL's worst tackler with a 26.6% blown tackle rate. The article does not say how many of those tackles went on into the endzone for a touchdown.