Luke James Uggles Eatwell, better known as Zack Sabre Jr., is an English professional wrestler who debuted in 2004 for NWA-UK Hammerlock. He signed with New Japan Pro-Wrestling (NJPW) in 2017 and became the second leader of The Mighty Don’t Kneel (TMDK) stable after joining the group in 2023. Praised by fans and critics for his technical mastery, inventive counters, and submission-based style, Sabre is widely regarded as one of the greatest technical wrestlers of the modern era, winning the Wrestling Observer Newsletter Best Technical Wrestler award in 2014–2020 and again in 2024 and 2025, as well as Best Technical Wrestler of the Decade (2010s).

In NJPW, Sabre is a two-time IWGP World Heavyweight Champion, three-time IWGP Tag Team Champion, the inaugural and two-time NJPW World Television Champion with a record first reign of 365 days, one-time IWGP Junior Heavyweight Tag Team Champion, and one-time NEVER Openweight Six Man Tag Team Champion. He won the 2018 and 2022 New Japan Cup, the 2024 G1 Climax, and the 2025 NJPW World Tag League alongside Ryohei Oiwa.

Outside NJPW, Sabre has competed for Pro Wrestling NOAH (NOAH), Ring of Honor (ROH), Pro Wrestling Guerrilla (PWG), Revolution Pro Wrestling (RevPro), and All Elite Wrestling (AEW). He was named Japan MVP in 2024, ranked No. 13 in the PWI 500 in 2025, and placed No. 3 in the PWI Tag Team 50 in 2021 alongside Taichi as Dangerous Tekkers.