Format
MX
Mastalerz, Xavier
🇧🇪FIDE 208310· Male· Belgium· Born in 1991
Follow Xavier MastalerzTrack his monthly FIDE ratings, games, tournaments and more.
Xavier Mastalerz, a 35-year-old Belgian player, is rated 2146 and sitting in the top 5% of Belgian players, and in the top 5% worldwide. He has slipped back 48 Elo over the past 12 months. 11 rated games in the past year (≈31/year long-term). Recent standard appearances include Belgian Interclubs Round 2025-2026 Ronde 11, Belgian Interclubs Round 2025-2026 Ronde 10, and Belgian Interclubs Round 2025-2026 Ronde 9. His peak of 2257 was reached at age 26 (Mar 2017); he also reached Belgian #57 in Mar 2016.
At junior level, he reached #5, #9 and #8 nationally in U20, U18 and U16.
Current rating
2146
Standard
Rpd2162·Blz2164
All-time high
2257
−111 pts below
Mar 2017 · age 26
Mar 2017 · age 26
Activity
10
games / yr avg. · ≈1/mo
11 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
Top 5%
#136 · Belgian players · of 2,977
Career timeline
13 entries2021
Re-crossed 2200
at age 30
Nov 2021
2017
500 career games
at age 26
Sep 2017
All-time peak 2257
at age 26 · −111 from today
Mar 2017
2016
Peak Belgian rank: #57
at age 25 · rated 2255
Mar 2016
2015
Crossed 2200
at age 24
Sep 2015
2011
5th Belgian U20 player
at age 20 · rated 2140
Mar 2011
Standard rating history
Peak
FIDE title
Threshold
First rated
COVID-19
Activity & highlights
Top opponent
Evolution
-48
2194 → 2146
Tournaments
11
11 games
Score
3.5/ 1131.8%
2W3D6L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
11 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Apr 2026 | 1/1 | #116 | 2620 | +2.6 |
Team | Mar 2026 | 1/1 | #127 | 2669 | +3.4 |
Team | Mar 2026 | 0.5/1 | #759 | 2207 | +1.8 |
Team | Mar 2026 | 0/1 | #1000 | 1514 | -5.4 |
Team | Feb 2026 | 0.5/1 | #916 | 2176 | +1.0 |
Team | Jan 2026 | 0.5/1 | #569 | 2121 | -0.6 |
Team | Dec 2025 | 0/1 | #1067 | 1313 | -11.4 |
Team | Nov 2025 | 0/1 | #1056 | 1302 | -12.0 |
Team | Nov 2025 | 0/1 | #1189 | 1393 | -9.6 |
Team | Oct 2025 | 0/1 | #1521 | 1502 | -6.8 |
Hot streak: 3 tournaments without losing Elo.
Most-Played Opponents
vsTom E WileyFM
🇬🇧ENG·2062
+0 −3 =3
6 games·last met Oct 2024
View head-to-head →
vsJimmy LafosseCM
🇧🇪BEL·2169
+1 −2 =3
6 games·last met Mar 2019
View head-to-head →
vsQuentin FontaineFM
🇧🇪BEL·2323
+3 −0 =3
6 games·last met Sep 2016
View head-to-head →
vsKevin Noiroux
🇧🇪BEL·2162
+1 −0 =5
6 games·last met Oct 2014
View head-to-head →
vsAxel Harutyunyan
🇧🇪BEL·2001
+5 −0 =0
5 games·last met Jan 2025
View head-to-head →
Rankings
/
Belgium
#136
out of 3,338 players
Europe
#8,273
in continent
World
#11,544
out of 400,000+
National ranking
Europe & World
Europe
World
Belgium
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