USCF player statistics

Mackin, John

USCF 32752496IllinoisLatest available supplement: Sep 2026
Official US Chess record
Rating format

Regular rating

638

Provisional rating

450575700Jan 2026: 498 (provisional)Feb 2026: 638 (provisional)Mar 2026: 638 (provisional)Apr 2026: 638 (provisional)May 2026: 638 (provisional)Jun 2026: 638 (provisional)Jul 2026: 638 (provisional)Aug 2026: 638 (provisional)Sep 2026: 638 (provisional)Jan 2026Sep 2026
Published supplement ratings. Lines connect available observations; they do not show individual tournament results.

Regular rating in context

United States

#51,371

Among 83,635 rated members; tied ratings share a rank.

Higher than 38.5% of ratings in this population.

Illinois

#2,472

Among 4,678 rated members; tied ratings share a rank.

Higher than 47% of ratings in this population.

Calculated from the Sep 2026 supplement, using the same population as Chess67’s USCF statistics: US members classified as active by the supplement rules, excluding lifetime-coded records. Includes provisional ratings. These are Chess67 calculations, not official US Chess rankings.

Published ratings by supplement

All available formats. P indicates a provisional rating.

Monthly USCF ratings for Mackin, John
SupplementRegularQuick
Sep 2026638 P631 P
Aug 2026638 P631 P
Jul 2026638 P631 P
Jun 2026638 P631 P
May 2026638 P631 P
Apr 2026638 P631 P
Mar 2026638 P631 P
Feb 2026638 P631 P
Jan 2026498 P496 P

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About these statistics

These pages use the USCF supplements available to Chess67. Ratings can change between monthly publications. Missing months do not mean a player was inactive. For current ratings and tournament history, consult the official US Chess record.

National USCF statisticsIllinois USCF statistics