rthur K. won the fourth Toronto Riichi Open on Sunday, August 9, at Toronto Metropolitan University. Fifth after six hanchan, he began the final division on 30.2 points after the score adjustment. He reached 67.4 after hanchan 7, then finished on 116.2 ahead of Vincent Shao on 48.3 and Ding on 46.6.
Arthur K. turns the final around
Vincent Shao led the preliminary standings on 152.2 points. Ding followed on 145.7, then Anson W. on 137.4 and Eric L. on 127.8. Arthur K. was fifth on 120.5. Under the published format, all eight totals were divided by four before hanchan 7: Vincent restarted on 38.1 and Arthur on 30.2.
Hanchan 7 flipped the race. Arthur climbed to 67.4 points and took the lead while Vincent fell to 3.9. Arthur then raised his total to 116.2 in the last round. Vincent recovered second place on 48.3, just ahead of Ding on 46.6. Jingwen L. finished fourth on 20.7.
The Toronto Riichi Open in pictures
Scores divided by four before the top eight
The tournament ran eight 80-minute hanchan over two days. The first six used the full field. After the cut, the eight qualifiers played two more rounds for places 1 to 8, while everyone else kept their total and continued in a separate ranking. The Running standings nevertheless record three departures after hanchan 6 and one more after hanchan 7; the final ranking lists them as disqualifications.
The rules used the WRC 2025 base with the lower-penalties table and a few club adjustments. Toronto’s etiquette video shows the procedures used for shuffling, calls, tile placement, and the score sheet.
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The top 8, round by round
The table below follows the tournament’s actual format. It is not a knockout bracket: the numbers are the seeds after hanchan 6, and the table scores are the cumulative totals after each round. The eight finalists change tables between hanchan 7 and hanchan 8 according to a rotation published before the event.
The full official standings rank 85 players. They separately record two substitutes, one withdrawal, and four disqualifications, along with the final-division results.
95 entrants, 85 ranked, 8 in the final division
Six hanchan with the full field, a cut to the top 8, scores divided by four, then two hanchan to settle the final order.
Final standingsfinal standings after hanchan 8
| Place | Player | Score |
|---|---|---|
| 1 | Arthur K. | +116.2 |
| 2 | Vincent Shao | +48.3 |
| 3 | Ding | +46.6 |
| 4 | Jingwen L. | +20.7 |
| 5 | Michael M. | +18.5 |
| 6 | Anson W. | +17.8 |
| 7 | Eric L. | +8.7 |
| 8 | Edward Z. | -22.7 |
Arthur K. wins on 116.2 points. These are the final-division scores after the totals were divided by four at the end of hanchan 6.
- Done
Day 1
Four hanchan with the full field, 80 minutes each.
- Hanchan 1Round played
- Hanchan 2Round played
- Hanchan 3Round played
- Hanchan 4Round played
- Done
Day 2, morning
Two more hanchan before the cut.
- Hanchan 5Round played
- Hanchan 6Round played
- Done
Cut and score adjustment
Vincent Shao leads the eight qualifiers on 152.2 points before their totals are divided by four.
- Players kept
- 8
- Score divided by
- 4
- Done
Hanchan 7
Arthur K. moves from fifth seed to the lead of the final division.
Table A Seed Player Score 1 Vincent Shao +3.9 2 Ding +66.3 7 Edward Z. +23.5 8 Jingwen L. +34.1 Table B Seed Player Score 3 Anson W. +53.4 4 Eric L. -8.4 5 Arthur K. +67.4 6 Michael M. +13.9 - Done
Hanchan 8
Arthur K. raises his total to 116.2 points and keeps first place.
Table A Seed Player Score 1 Vincent Shao +48.3 3 Anson W. +17.8 6 Michael M. +18.5 8 Jingwen L. +20.7 Table B Seed Player Score 2 Ding +46.6 4 Eric L. +8.7 5 Arthur K. +116.2 7 Edward Z. -22.7 - Done
Final standings, places 1 to 8
Arthur K. finishes ahead of Vincent Shao and Ding after eight hanchan.
Final places Place Player Score 1 Arthur K. +116.2 2 Vincent Shao +48.3 3 Ding +46.6 4 Jingwen L. +20.7 5 Michael M. +18.5 6 Anson W. +17.8 7 Eric L. +8.7 8 Edward Z. -22.7
Five clubs and regions in the final top 8
The final top 8 represented five affiliations. Arthur K. played for Ontario. Vincent Shao and Ding came from Riichi Mahjong UW, while Jingwen L., Michael M., and Eric L. represented Toronto Riichi Club. Anson W. represented the Hong Kong Mahjong Association and Edward Z. the Philly Mah-Jawn Club.