Donald M Mason

USA · 67 yrs · K=40 · Peak 1748 (Apr 2025)

World #=103432 live2865#100,567 publishedUnited States #=3110

OCT26 Rating

1728

Live Rating

1728.0

Change

0.0

Games Played

Rating History · Classical

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Official classical rating by month

Classical games since the October list

No rated standard games this rating periodsince the OCT26 list (Oct 1, 2026)

	Last played	Score	TPR
	2026 Cincinnati Open - FIDE ClassApr 10 – Apr 12	4/5	—

The live rating moves only when new rated games are played. Until then it matches the published rating.

8 events

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

2026 Cincinnati Open - FIDE Class—(2)
Apr 2026Swissfederation source
Score 4/5Opp avg 1645Start 1716
23rd Annual Southern Class Championship - Class A1713
Mar 2026Swissfederation source
Best of 2026Score 2/5Opp avg 1785Start 1717
2025 Cincinnati Open - FIDE Expert—(2)
Apr 2025Swissfederation source
Score ½/4Opp avg 1840Start 1748
22nd annual Southern Class Championships - Class A1814
Mar 2025Swissfederation source
Best of 2025Score 1½/3Opp avg 1814Start 1735
2024 Michigan Open1736
Aug – Sep 2024Swissfederation source
#2 in 2024Score 3½/7Opp avg 1808Start 1738
2024 Cincinnati Open - FIDE Expert1756
Apr 2024Swissfederation source
Best of 2024Score 2/5Opp avg 1828Start 1737
2023 Harold Steen Memorial Cup - Open1546
Oct 2023Swissfederation source
Best of 2023Score 2/5Opp avg 1671
2023 Michigan Open—(2)
Sep 2023Swissfederation source
Score 2½/7Opp avg 1577

Live ratings projected from the OCT26 published list · Not affiliated with FIDE