Scouting report: Sion Radamantys Galaviz Medina (GM, MEX)

693 over-the-board games in the Chess Stalker database (619 classical, 34 rapid, 58 blitz): 51% wins, 23% draws, 26% losses. FIDE rating 2538 standard, 2440 rapid, 2435 blitz. 351 games analyzed with Stockfish: 93% accuracy, 0.08 blunders per game.

  • Opening repertoire of Sion Radamantys Galaviz Medina as White and Black, with results per line — free.
  • Weaknesses and blunder patterns, evaluated with Stockfish — free.
  • Recent over-the-board games and endgame statistics.
  • Twin Bot: a sparring bot that imitates Sion Radamantys Galaviz Medina's style so you can rehearse the matchup — free online.

Full report: https://chessstalker.com/fide/5123119 — no account needed.

Sion Radamantys Galaviz Medina

GM

Mexicoborn 2005FIDE ID 5123119

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026
2200
2300
2400
2500
2600
Peak2538
2462 · Sep 2023
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Sep 2023Oct 2026
2538
2440
2435
2538peak, Sep 2026
693games
355wins, 51%
157draws, 23%
181losses, 26%

Play style

before facing them
Elite accuracy: 93.0% average
Solid conversion: 90%
Very consistent (89%)
Very precise: only 0.1 blunders/game
Dominates 1.d4 as ♔ (66% in 348 games)
Vulnerable to 1.Nf3 ♚ (only 41%)

Play against Galaviz Medina's Twin

Their real openings, level & style

Based on 693 games

Openings

693 games

Weaknesses

where they slip as ♔ White

No significant weaknesses detected as white

Strengths

what holds up for them as ♔ White
Slav Defense1.d4 d5 2.c4 c620 games, last played 2 months ago80.0%wins
Benoni1.d4 f6 2.c4 c519 games, last played 6 months ago68.4%wins

Deep analysis

Stockfish · Classical · 351 analyzed
Accuracy by phase
Opening
96.6%
Middlegame
93.1%
Endgame
94.8%
Clutch factor
+5%
Winning (+2)
94%
Equal
94%
Losing (−2)
89%
Problematic pieces
23%
80 err
19%
65 err
16%
56 err
14%
47 err
14%
49 err
13%
45 err
Critical moment
Move 44 avg
0%
1-15
9%
16-25
32%
26-35
14%
36-45
45%
46+
45% of blunders occur after move 46. Keep tension until then.
Error heatmap · Critical squares
16
Few
Many
e5
16
d5
12
f6
11
d2
10
e4
10
e5/d5 concentrate most errors. Force decisions in those zones.

Critical blunders

10 errors
#28
d7?? vs Shankland
Middlegame · OTB · 2026
#47
b4?? vs Bluebaum
Endgame · OTB · 2026
#30
xg5?? vs Carlsen
Endgame · OTB · 2026
#38
c8?? vs Martinez Alcantara
Endgame · OTB · 2026
#44
xb7+?? vs Samadov
Endgame · Blitz · 2025
#96
e5?? vs Alhassadi
Endgame · Blitz · 2025

Recent games

Cori, Jorge(2586)

IV Aguascalientes Int · 9 Aug 2026

½–½
Perez Rodriguez, Cesar Alejandro(2391)

IV Aguascalientes Int · 8 Aug 2026

1–0
Hernandez Guerrero, Gilberto(2382)

IV Aguascalientes Int · 8 Aug 2026

1–0
Miranda Mesa, Elier(2450)

IV Aguascalientes Int · 7 Aug 2026

½–½
Quesada Perez, Luis Ernesto(2536)

IV Aguascalientes Int · 7 Aug 2026

1–0
Obregon Rivero, Juan Carlos(2473)

IV Aguascalientes Int · 6 Aug 2026

1–0

Endgame statistics

Repertoire

PRO
693 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
350 games56%W18%D26%L
Move
1. d4
3485w
57%1825%
66%
1. c4
17m
100%
50%
1. f3
12y
100%
0%

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