Osvaldo Antonio Butti: The 45,000 Game Blitz Marathoner
Osvaldo Antonio Butti, known online as OsvaldoButti, is a force of nature in the blitz arena. Since November 2012 he has played more than 45,000 rated games, stacking up over 21,000 wins in blitz alone. His rating journey is a classic tale of persistence: he started near 1336, ground his way into the 1800s, survived a chaotic 2017 that saw him dip below 1300, and then surged to a peak of 2408 (2026-09-23) in 2026.
He is the kind of player who never says no to another game. His busiest months feature nearly 1,000 games, and his favorite hour is 18:00, when he is at his sharpest.
A Repertoire Built on Habit
Osvaldo is a creature of habit. He opens with 1.e4 almost exclusively and has faced the Sicilian Defense: Najdorf Variation more than 1,200 times as White, scoring an impressive 52.75% win rate. He is also one of the great champions of the Blackburne Shilling Gambit, a sharp and sneaky line he has played nearly 1,500 times.
As Black, he leans on the Czech Defense and the Modern Defense, and his willingness to wade into unconventional territory makes every game a fight.
Rivalries That Define a Career
No story about Osvaldo is complete without his great nemesis ronito10. They have battled 317 times, and ronito10 holds the edge with 167 wins to Osvaldo's 132. Against Juan Carlos Diaz the tables turn: Osvaldo has 108 wins in 196 meetings. He has also shared 143 intense battles with facundomikk, making this trio his most familiar opposition.
The Comeback King
Osvaldo simply does not stay down. His comeback rate is 84.44%, and he still wins nearly half of his games even after losing a piece. He has rattled off 15 wins in a row at his best, and even after a painful 21 game losing streak he returned to the board and kept climbing.
- Longest winning streak: 15 games
- Longest losing streak: 21 games
- Comeback rate: 84.44%
- Favorite hour: 18:00
He wins 66% of his games against lower rated opponents, delivers checkmate far more often than he gets mated, and brings a fighting spirit that makes him one of the most entertaining grinders on the platform.