Guide
Using official rating history
Read publications, seasonal points and match rows without implying an unofficial live rating.
Select identity and season
Open rating history only through the seven-digit NTTB number on a verified player profile. Then choose an available source season. The chart and table show official observations by published season; missing observations can coexist with real match rows and must not cause those results to disappear.
Read one match row
Treat date, opponent, games, published rating and source delta as separate fields. An opponent link searches again by that player’s NTTB number. The delta is source information for the match, not a promise that simple addition recreates the next publication, because processing and initial-rating rules also apply.
Account for system changes
The official explanation covers weighting, temporary ratings and inactivity. NTTB also announces changes from 1 July 2026, including removal of bonus points and introduction of a doubles-pair ranking. Record the source version or checking date whenever rating data informs seeding or comparison.