Who is Wilberth Sebastian Lopez Fuentes?
Wilberth Sebastian Lopez Fuentes, known online as eloficialwslf, is a FIDE Candidate Master who treats the bullet chess board like a high speed racetrack. The username translates roughly to "the official," and on any given night he is the sheriff of chaotic time scrambles, arriving at a peak bullet rating of 2952 (2026-04-04) in April 2026.
The Bullet Meteoric Rise
Wilberth's rating graph reads like a startup hockey stick. He entered December 2025 at a modest 1500 bullet rating and closed the same month at 2621. By March 2026 he had crossed 2900, and in April he touched a scorching 2952 before settling near 2946. That kind of vertical climb is rare even among titled online grinders.
His blitz game is no joke either, peaking at 2748 (2026-04-09) with a forceful 2748. Rapid, meanwhile, sits at a solid 2109 (2026-03-27), suggesting that he prefers to let the clock do the talking.
Opening Repertoire: The French Connection
If there is one thing Wilberth loves, it is the French Defense. The Exchange Variation alone appears in over 100 of his bullet games, and he has experimented with the Caro-Kann Defense Exchange, the Scotch Game, and the aggressive Bishop's Opening: Urusov Gambit. He is equally happy to face the Petrov's Defense and the Scandinavian Defense.
His record in the French Exchange is a study in persistence: 42 wins, 51 losses, 12 draws in bullet. He keeps coming back, like a boxer who loves the sport too much to stay on the stool.
Rivalries and Duel Logs
No online journey is complete without rivals. Wilberth's most frequent dance partner is theredking89, who holds a lopsided 22 to 8 edge in their 33 meetings. Some rivalries are about victory; this one appears to be about stubborn pride. He fares better against honorthehawk (11 wins to 10 losses) and bozzochess123 (7 wins, 6 losses).
Juan Carlos Obregon RiveroAgainst players rated below him, Wilberth wins at a 70.5% clip. Against higher rated opponents that number drops to 28.59%, but his comeback rate of 90.13% means he never quite goes away.
Signature Territory
Show the man an open center and he will go to work. A typical French Exchange moment:
Wilberth reaches the endgame in over 81% of his games and grinds out wins in an average of 78 moves. He is a patient finisher trapped inside a bullet player's body.
The Tilt Factor
The data reveals a very human competitor. His tilt factor sits at 10, and he has both an 11 game winning streak and a 10 game losing streak on his record. His best time of day is 9:00 AM, when his win rate touches 100%, while the midnight hours are a dangerous gamble. Wednesday is his lucky day at 58.89%, but Thursday is his most consistent at 52.81%.
Long losing streaks, a 51% early resignation rate, and a current four game skid suggest that when the official is off duty, he is really off duty.