Yoshinori Sasaki, better known by his ring name Mammoth Sasaki, is a Japanese professional wrestler who debuted in 1997 and is known for his time in Pro Wrestling Freedoms. He is a four-time King of FREEDOM World Tag Team Champion, five-time WEW Hardcore Tag Team Champion, two-time BJW Tag Team Champion, one-time WEW Heavyweight Champion, and one-time WEW Hardcore Champion.