Oleg sayuw Kelenbeth is a Russian professional Dota 2 player known for his ability to play as Tusk, Windranger and Earth Spirit heroes.

His professional career started in 2017 when he joined Gears of Destruction. He later moved to Marlerino eSports and managed to win gold medals at the Tyumen Cyber Fest 2018 and Ugra Open 2018 tournaments. In September 2018, sayuw joined Team Empire and participated in tournaments such as WePlay! Dota 2 Tug of War: Radiant, BTS Spring Cup: Europe and MDL Disneyland Paris Major. At the end of 2019, he left Team Empire and joined HellRaisers, but spent only a few months with the team.

In the first half of 2020, sayuw played in various stacks and mixes before returning to Team Empire in September of the same year. As part of that team, he participated in ESL One Fall 2021, finishing in 7th-8th place, and also played in several Dash 2 and Dash 3 tournaments, including BTS Pro Series Season 3: Europe/CIS, Snow Sweet Snow #1, and Dota 2 Champions League Season 1. He also attempted to qualify for The International 2021, but lost to Team Spirit by a score of 2-3.

In 2022, sayuw played for Gambit Esports and One Move, participating in several seasons of the Dota 2 Champions League online tournament and performing well in the DPC League. In December 2022 Oleg joined the legendary cybersport organization Virtus.pro. As a member of VP Oleg participated in BetBoom Xmas Show, Pinnacle Cup: Malta Vibes #1, Riyadh Masters 2023, as well as took 7th-8th place at The International 2023 and 4th place at Pinnacle: 25 Year Anniversary Show.

In 2024, sayuw and VP placed 11th at Betboom Dacha Dubai 2024, 9th at DreamLeague Season 22, 2nd at 1win Series Spring and 17th at Elite League 2024, after which sayuw moved to 9Pandas. The team went on to open qualification for the upcoming Riyadh Masters 2024, and then qualified for The International 2024, but failed to qualify for any of the major tournaments. Also, a little later, the qualifying round for Elite League Season 2 started, which 9Pandas failed in 7th place.

On August 8, 2025, the organization One Move suspended its esports operations due to financial difficulties.