Eduardo DaMatta: National Master, Bullet Believer, Blitz Marathoner
Eduardo DaMatta, known to the leaderboard as EDaMatta, is a National Master who has turned online chess into an extreme sport. Since arriving in late 2022 with a modest blitz rating and an evidently unlimited supply of evenings, he has played more than 17,000 rated games, a workload that would send most club players straight to a nap. Ask him his favorite format and he will tell you bullet chess, the format where legal moves are negotiable and regret is instant.
Career Highlights
- Earned the National Master title, the official paperwork proving the late night grinding was worth it.
- Climbed from humble beginnings to a peak blitz mark of 2472 (2026-06-03), set in June 2026 after a savage 509 game month.
- Threaded together a 13 game winning streak, carefully balanced by a 15 game losing streak, the chess version of a roller coaster with one rail missing.
- Quietly posts a bullet peak of 2036 (2023-01-03) and a strength adjusted win rate in bullet that actually beats his blitz numbers.
The 1.d4 Devotee
Eduardo's white repertoire is a monument to commitment. His first move log reads like a broken record: d4 over 8,800 times, c4 about 20 times, and e4 a grand total of 13 times, likely the result of misclicks or a lost bet. The centerpiece is the Slav Defense Exchange Variation, which he has played 914 times with a winning record, making him one of the few humans alive who genuinely enjoys symmetrical pawn structures.
Behind the Slav sits a deep Queen's Gambit Declined library and regular trips into King's Indian Defense territory. As Black he lives in the Sicilian Defense, Classical Variation preferred, with well over 850 Sicilian games on record. One plea from the man himself: please stop playing the Amazon Attack against him. He has faced it 458 times with a win rate south of 35 percent, and he has suffered enough.
Rivalries and Familiar Faces
Nobody plays Eduardo more than MijailTal06, a 98 game epic sitting at a razor thin 44 wins, 49 losses and 5 draws. At this point it is less a rivalry than a shared lifestyle. GVolynskiy and APcom trail in the head to head columns, while Ariel Crawford and purpleberry22 hold winning records that Eduardo pretends not to think about at night.
Playing Style: Fight First, Resign With Dignity
The data paints a wonderfully contradictory portrait. Eduardo resigns early in 88 percent of lost positions, protecting both his clock and his ego, yet his comeback rate sits above 80 percent, meaning plenty of hopeless looking positions turn into trophies before the resignation letter is ever sent. Nearly three quarters of his games reach a true endgame, and his average win staggers on for more than 71 moves, proof that he will outlast you out of pure stubbornness.
- Queen checks account for over 15,000 of his delivered checks, because why bring a knight to a firepower fight?
- When Eduardo checks first, he wins about 51 percent of his games. When he gets checked first, that number collapses below 37 percent.
- His one sided loss rate is a microscopic 1.7 percent. If you beat him, you will absolutely sweat for it.
- Against lower rated opposition he wins roughly 76 percent of the time; against higher rated opposition, 28 percent. A shark in shallow water, a very brave guppy everywhere else.
- His tilt factor is a zen like 15, which is remarkable for someone who once played over 800 blitz games in a single month.
The Clock and the Calendar
Scheduling matters with this one. Eduardo's win rate peaks at a sparkling 55 percent in the 11 AM hour and falls off a cliff before breakfast, where 7 AM games have produced a heroic 0 percent win rate. The data suggests one simple rule: never accept a challenge from Eduardo before his coffee. He also performs about 24 percentage points better in casual games than rated ones, hinting that rated points make his hands just a little sweatier.
Whether he is squeezing a Slav endgame or flagging an opponent in bullet, Eduardo DaMatta plays chess the way it was meant to be played: often, quickly, and with an exit strategy for every lost position.