CChessStats

60th Stamer Memorial Tournament - 1600-1999

Open SwissStandard

27 players participated in this 4-round tournament, held from 27 Jun 2026 to 28 Jun 2026 in San Francisco, CA, United States. 2 federations represented. Top 10 Elo average was 1696, and top seed was Dev Isak Kosuri (🇺🇸 USA, 1832).

Aaditya Joshua Rajesh (🇺🇸 USA, 1675) won with 4.0/4, ahead of Ojas Parhar (3.0) and Matthew Wang (3.0). Rajesh broke clear in the final round.

The biggest upset came in round 3: Matthew Wang (1603) beat Dev Isak Kosuri (1832), a +229-point gap.

Location
🇺🇸San Francisco, CA, United States
Dates
27 Jun 2026 → 28 Jun 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 4 rounds
Top seed
🇺🇸Dev Isak Kosuri1832
Avg top 10
1,696
Participants
27
Federations · 2 represented
🇺🇸United States of America×23
🇸🇬Singapore×1
Top 3
  • 🥇
    Aaditya Joshua Rajesh
    🇺🇸USA·1675
    4.0pts·2352perf+40.0
  • 🥈
    Ojas Parhar
    🇺🇸USA·1502
    3.0pts·1837perf+70.0
  • 🥉
    Matthew Wang
    🇺🇸USA·1603
    3.0pts·1862perf+53.2

How it unfolded

Top 6 · 4 rounds

Aaditya Joshua Rajesh led from R4; +1.0-point edge over the runner-up.

Co-leaders
10
5
2
1
1234R1R2R3R4
Rajesh4Parhar3Wang3Sundaram3Petty2.5Kosuri2.5
R4–R4 · LEAD HELD

Aaditya Joshua Rajesh never relinquished the lead after R4; final gap +1.0 over the runner-up.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Aaditya Joshua Rajesh beat Ojas Parhar (Black).

WIN STREAKS · 3 top finishers

Aaditya Joshua Rajesh 4 wins (R1–R4)Ojas Parhar 3 wins (R1–R3)Matthew Wang 3 wins (R2–R4)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Aaditya Joshua Rajesh*
1
——
2Ojas Parhar
0
*
1
—
3Matthew Wang—
0
*—
4Deepak Sundaram———*

Grille américaine

#PlayerEloFedR1R2R3R4PtsBu C1BuSBPerfΔ
1Rajesh, Aaditya Joshua1675USA+23B+17N+5B+2N4.07.08.08.002352+40.0
2Parhar, Ojas1502USA+3B+14N+12N−1B3.09.011.07.001837+70.0
3Wang, Matthew1603USA−2N+22B+6N+12B3.07.58.55.501862+53.2
4Sundaram, Deepak1658USA+18N−16B+21B+8N3.06.07.05.001713+8.8
5Aetukuri, Gautam Chowdary1612USA+24B+15B−1N=10B2.58.09.04.001724+24.0
6Kosuri, Dev Isak1832USA=11B+13N−3B+19N2.57.08.54.501642-34.0
7Ballantyne, Wayne1830USA=13B+11N+9BF2.56.56.55.501701-4.8
8Macharla, Vasisht1570USA=17B+26N+10N−4B2.56.56.52.751809+38.4
9Petty, Samuel Joseph0USA+27B=10B−7N+18B2.56.06.02.5016690.0
10Bogi, Yudhin1624USA+19B=9N−8B=5N2.07.59.04.001584-7.2
11Srinivasan, Neev1454USA=6N−7B+17B=14N2.07.08.53.751625+20.0
12Kayal, Rishan1707USA+22B+21N−2B−3N2.07.08.02.001455-40.0
13Biswas, Rishan1561USA=7N−6B+25N=15B2.07.07.52.751668+20.4
14Vaddadi, Anay1589USA+25N−2B=18N=11B2.06.57.02.251488-21.6
15Pereira, Wes1595USA+20B−5N=19B=13N2.06.07.53.251456-22.4
16Han, Ethan1612USA+26B+4NFF2.03.03.03.002515+50.8
17FIDE 399221030—=8N−1B−11N+25B1.58.59.01.7514410.0
18Sankrithi, Sarang Athreya1583USA−4B+27N=14B−9N1.57.57.51.001601+2.8
19Jiang, Richard1570USA−10N+24B=15N−6B1.56.57.52.0015810.0
20FIDE 309000260—−15N=25B−23N+24B1.54.04.51.2514560.0
21FIDE 5660047480—F−12B−4N+22N1.06.06.01.0015410.0
22Mythil, Arnav1634USA−12N−3N+27B−21B1.06.06.00.001497-22.0
23Reifurth, Lawrence M1542USA−1NF+20BF1.05.55.51.50875-12.8
24Shafi Ibrahim, Ammar Mahi1620USA−5N−19N+26B−20N1.05.55.50.001526-15.2
25Chen, Felix Y1414USA−14B=20N−13B−17N0.55.57.00.75775-22.8
26Sampath, Lokeshh1771SGP−16N−8B−24NF0.05.55.50.00801-86.8
27Saliva, Samuel Allen1557USA−9N−18B−22NF0.05.05.00.00809-34.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
60th Stamer Memorial Tournament - 1600-1999 — San Francisco, CA, United States | Chess Tournament Results | ChessStats