Oleksandr Bortnyk: Ukrainian Grandmaster and Chess Streamer
Oleksandr Bortnyk, known online as Oleksandr_Bortnyk, is a Ukrainian Grandmaster, a popular chess streamer, and one of the most persistent online competitors in the game. Since 2016 he has played tens of thousands of rated games, often against the very best in the world. His listed favorite time control is Rapid, but his match history tells a different story: an endless feast of bullet and blitz battles.
A Lifelong Online Marathon
Bortnyk's online career looks like a marathon with no finish line. His bullet rating peaked at 3431 (2026-01-08) and his blitz rating reached 3264 (2026-05-01), numbers that only a select few ever touch. Along the way he has collected more than 38,000 bullet wins, over 12,000 blitz wins, and a 102-game winning streak that feels like a video game glitch.
- Peak bullet rating: 3431 (2026-01-08)
- Peak blitz rating: 3264 (2026-05-01)
- Longest winning streak: 102 games
- Over 50,000 rated online games and counting
Rivalries That Define Him
Bortnyk does not shy away from tough opposition. He has faced Hikaru Nakamura 1,277 times, taking 280 wins and 166 draws from the five-time U.S. champion. His most frequent dance partner is Daniel Naroditsky, with 2,381 games between them. Although those elite rivals hold the edge in their head to head battles, Bortnyk owns winning records against several other marathon opponents, including longtime foes Sergei Zhigalko and Tuan Minh Le.
An Opening Repertoire With Personality
Bortnyk is not afraid of unusual paths. As White he is a devoted fan of the Amazon Attack, an offbeat line he has played more than 3,200 times in blitz while winning 77% of those games. As Black he leans on the Alekhine Defense, his most trusted hypermodern weapon with over 2,400 blitz games and a win rate near 74%. He also enjoys the Sicilian Defense: Alapin Variation, the Caro-Kann Defense, and the Philidor Defense, always hunting for practical and surprising play.
The Numbers Behind the Madness
Bortnyk's profile reveals a player who simply refuses to give up. His comeback rate is 82.76%, and he wins 64.95% of games even after losing a piece. His losses average more than 100 moves, so opponents have to earn every point. His longest losing streak is 28 games, which he promptly answered with a 102-game winning streak. His tilt factor is also 28, which feels like the universe telling a joke.
- Preferred time control: Rapid, despite nearly 38,000 bullet games. That is like saying you prefer salads while eating an entire pizza.
- White win rate: 69.95%
- Black win rate: 65.56%
- Saturdays are his danger day: 71.22% win rate, peaking at 16:00
So if you match with Oleksandr_Bortnyk, bring your best moves and a comfortable chair. He may lose a piece, fall behind on the clock, or outlast you for 100 moves, and he might still beat you.