Format
SG
Sermier, Guillaume
IM🇨🇭FIDE 605832· Male· Switzerland· Born in 1978
Follow Guillaume SermierTrack his monthly FIDE ratings, games, tournaments and more.
Guillaume Sermier, a 48-year-old Swiss International Master, is rated 2285 and ranked 49th among Swiss players, and in the top 2% worldwide. He has fluctuated between 2285 and 2335 over the past 2 years. 18 rated games in the past year (≈30/year long-term). Recent standard appearances include SMM NLA 2026 round 2, Team 2026 - Nationale 1 r8-9, and SMM NLA 2026 round 1. His peak of 2428 was reached at age 33 (Mar 2011); he also reached Swiss #15 in Apr 2013.
Competes for Switzerland since Sep 2009. Awarded IM in 2004 (age 26) and FM in 2001 (age 23).
Current rating
2285
Standard
Rpd2362·Blz2398
All-time high
2428
−143 pts below
Mar 2011 · age 33
Mar 2011 · age 33
Activity
27
games / yr avg. · ≈2/mo
18 past 12 mo · ≈2/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#49
#49 · Swiss players · of 3,199
Career timeline
17 entries2026
Re-crossed 2300
at age 48
Feb 2026
2024
3rd Swiss 45-50 player
at age 46 · rated 2334
Oct 2024
2022
3rd Swiss 40-45 player
at age 44 · rated 2367
Sep 2022
2020
Inactive for 17 months
paused at 2366 → returned at 2356
Mar 2020
2016
500 career games
at age 38
Jan 2016
2013
Peak Swiss rank: #15
at age 35 · rated 2420
Apr 2013
Standard rating history
Activity & highlights
Evolution
-17
2302 → 2285
Tournaments
13
19 games
Score
8/ 1942.1%
6W6D7L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
13 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Apr 2026 | 0/1 | #78 | 1740 | -1.9 |
Team | Mar 2026 | 0.5/2 | #244 | 1965 | -8.5 |
Team | Mar 2026 | 0.5/1 | #54 | 2452 | +2.0 |
Team | Feb 2026 | 0.5/1 | #49 | 2327 | +0.4 |
Team | Feb 2026 | 0/1 | #120 | 1363 | -6.8 |
Team | Jan 2026 | 1/2 | #145 | 2321 | +0.6 |
Team | Dec 2025 | 0.5/1 | #127 | 2028 | -3.3 |
Team | Dec 2025 | 1.5/2 | #62 | 2464 | +4.3 |
Team | Nov 2025 | 0.5/1 | #228 | 2330 | +0.5 |
Team | Oct 2025 | 1/2 | #64 | 2259 | -0.6 |
Most-Played Opponents
vsMichael PrusikinGM
🇩🇪GER·2492
+0 −3 =3
6 games·last met Dec 2024
View head-to-head →
vsOliver KurmannIM
🇨🇭SUI·2353
+0 −1 =5
6 games·last met Oct 2021
View head-to-head →
vsAndrei SokolovGM
🇫🇷FRA·2446
+0 −0 =6
6 games·last met Mar 2015
View head-to-head →
vsPatrice LerchIM
🇫🇷FRA·2304
+1 −1 =3
5 games·last met Dec 2024
View head-to-head →
vsPascal Guex
🇨🇭SUI·2158
+3 −0 =2
5 games·last met Dec 2023
View head-to-head →
Rankings
/
Switzerland
#49
out of 3,418 players
Europe
#3,046
in continent
World
#4,556
out of 400,000+
National ranking
Europe & World
Europe
World
Switzerland
| 1 | 🇨🇭Follow Vadim MilovTrack their monthly FIDE ratings, games, tournaments and more. | 2,576 |
| 2 | 🇨🇭Follow Sebastian BognerTrack their monthly FIDE ratings, games, tournaments and more. | 2,546 |
| 3 | 🇨🇭Follow Li Min PengTrack their monthly FIDE ratings, games, tournaments and more. | 2,535 |
| 4 | 🇨🇭Follow Adrien DemuthTrack their monthly FIDE ratings, games, tournaments and more. | 2,523 |
| 5 | 🇨🇭Follow Nico GeorgiadisTrack their monthly FIDE ratings, games, tournaments and more. | 2,520 |
| 6 | 🇨🇭Follow Yannick PelletierTrack their monthly FIDE ratings, games, tournaments and more. | 2,514 |
| 7 | 🇨🇭Follow Alexandra KosteniukTrack their monthly FIDE ratings, games, tournaments and more. | 2,491 |
| 8 | 🇨🇭Follow Ioannis GeorgiadisTrack their monthly FIDE ratings, games, tournaments and more. | 2,483 |
| 9 | 🇨🇭Follow Clovis VernayTrack their monthly FIDE ratings, games, tournaments and more. | 2,465 |
| 10 | 🇨🇭Follow Florian JenniTrack their monthly FIDE ratings, games, tournaments and more. | 2,462 |
| ... | ||
| 49 | 2,285 | |
Europe
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,840 |
| 2 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 3 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 3 | 🇫🇷Follow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 5 | 🇵🇱Follow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more. | 2,739 |
| 6 | 🇳🇱Follow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more. | 2,735 |
| 7 | 🇭🇺Follow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more. | 2,729 |
| 8 | 🇫🇷Follow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more. | 2,717 |
| 8 | 🇦🇿Follow Shakhriyar MamedyarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,717 |
| 10 | 🇹🇷Follow Yagiz Kaan ErdogmusTrack their monthly FIDE ratings, games, tournaments and more. | 2,708 |
| ... | ||
| 3046 | 2,285 | |
World
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,840 |
| 2 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
| 3 | 🇺🇸Follow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more. | 2,788 |
| 4 | 🇺🇿Follow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more. | 2,780 |
| 5 | 🇺🇿Follow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,776 |
| 6 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 7 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 7 | 🇫🇷Follow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more. | 2,759 |
| 9 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,754 |
| 10 | 🇨🇳Follow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| ... | ||
| 4556 | 2,285 | |