Pat McAfee took Cal Raleighs nickname to another stratosphere. Known affectionately as Big Dumper because of his rather large rear end, Raleighs comedic nickname turned into a whole lot more when McAfee introduced the Mariners catcher for the Home Run Derby. ESPNs Pat McAfee introduced the Home Run Derby participants and was particularly excited during Cal Raleighs. X/Jomboy Media Hailing from Cullowhee, North Carolina, a man whos doing something that no catcher has ever done in the history of the sport, . With the fattest a s in all of profe sional sports Ladies and gentlemen: Big Dumper! Cal Raleigh! The All-Star catcher has embraced his nickname, but that type of introduction in front of the fans in Atlanta and the national television audience viewing the derby at home was certainly a first. YES Network recently made multiple zoom-ins during a hilarious segment about Byron Buxton Jersey Cal Raleighs nickname, Big Dumper. YES Network Explore More While it was shocking to hear McAfees comments, Raleigh recently and discu sed his nickname, so perhaps the rapport to say such a thing was built beforehand. Raleighs posterior certainly isnt hurting him, as Big Dumper currently leads all of baseball in home runs with 38 through the All-Star break. He also posts a .259 batting average, an OPS of 1.010 and an MLB-leading 82 RBIs. Cal Raleigh before the Home Run Derby. Getty Images Like his play, Raleighs nickname has gone nuclear, as jerseys are even sold at the Mariners stadium with Big Dumper on the back. In the stadium, you see more Big Dumper jerseys than you do Raleigh jerseys, . I think they were getting a lot of requests, so they just sell them on the rack now. Apparently they sold out. Someone brought a jersey for me to sign the other day and they said all the adult sizes were out. Big Dumper also received quite the during Seattles recent series against the Yankees, where the game broadcast could not keep its camera shots off of the fattest a s in all of profe sional sports. Manuel Margot Jersey