Player record

Zhang, Hongbin (Roger)

ID 70041CAMaleInactive
Current rating706
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Wins

13

Indexed tournament wins

Losses

8

Indexed tournament losses

Matches

21

Decisive results

Win rate

61.9%

Across indexed matches

Peak rating

706

Highest rating in the available history.

Biggest upset

Brin, Harriet

Golden State Open · Jun 12, 2005 · +315 rating

Open →

Biggest loss

-, -

Golden State Open · Jun 12, 2005 · -145 rating

Open →

Most frequent opponent

Brian Chen

2 matches

Open →

Rating trajectory

Published rating movement across recorded events.

Tournament history

3 tournament appearances · synced Aug 12, 2026, 2:39 AM

DateTournamentRating inRating afterPoints changedRecord
Jun 12, 2005Golden State OpenTournament · View matches665706+41+51 / -103W / 2L
Apr 30, 2005Sacramento Spring OpenTournament · View matches525665+1408W / 5L
Feb 26, 2005Sacramento Winter OpenTournament · View matches · Initial rating 525Unrated525—2W / 1L