WrestleZone has confirmed that an internal memo sent to WWE staffers this week listed the top 10 merchandise sellers, and John Cena has been replaced for the first time in several years as the number one seller.

The new number one?

CM Punk.

According to the memo, Punk is the number one merchandise selling WWE Superstar both on WWE Shop Zone and at the live events. The only time Cena was not number one was when The Rock returned to WWE Monday Night Raw, and his t-shirts sold a record number on ShopZone.

According to a key source in WWE, two of Punk's shirts have already eclipsed the Rock's one-day sales record. "Punk's merchandise is hot," our source told us, "no one has dethroned Cena in over 5 years, and Punk's numbers are way above anything or anyone else."

WrestleZone previously reported that another surprising WWE star has cracked the top 10 in terms of merchandise sales, and you can read more on that if you CLICK HERE.