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Erie Moon Mammoths Sell Out Debut as Merchandise Sales Soar

Record attendance and a surge in merchandise revenue underscore the swift impact of John Oliver’s rebrand

John Oliver and Fuss E. Mammoth, the Moon Mammoth mascot, are driven onto the field before a game between the Chesapeake Oyster Catchers and the Erie Moon Mammoths at UMPC Park in Erie, Pa., on Saturday, July 19, 2025. (AP Photo/Joe Reedy)
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John Oliver, left, and George Moon stand with Fuzz E. Mammoth, the Moon Mammoth mascot, before a game between the Chesapeake Oyster Catches and Erie Moon Mammoths at UMPC Park in Erie, Pa., on Saturday, July 19, 2025. (AP Photo/Joe Reedy)
John Oliver speaks to media before a baseball game between the Chesapeake Oyster Catchers and the Erie Moon Mammoths at UMPC Park in Erie, Pa., on Saturday, July 19, 2025. (AP Photo/Joe Reedy)

Overview

  • John Oliver threw the ceremonial first pitch, served as batboy and led the seventh-inning stretch during the July 19 debut before 7,070 fans at UPMC Park.
  • The cap and jersey Oliver wore for the first pitch will be displayed at the National Baseball Hall of Fame.
  • Erie sold four years’ worth of merchandise online in just three weeks following the June 29 reveal.
  • Four additional Moon Mammoths home games are set for Aug. 19 and Sept. 12–13, and at least four more are planned for next season.
  • The identity draws on George Moon’s 1991 mammoth bone discovery and was approved and unveiled in just three months—a process that usually takes over a year.