Chapchai Nirat
BY YEAR
| Singha all Thailand Memorial | ATGT | 27 | 2019 | T10 | - | 1 | - | 489th |
| Kolon the 62nd Korea Open | ASA,KOR | 25 | 2019 | MC | - | 1 | - | 463rd |
| Singha all Thailand Championship | ATGT | 24 | 2019 | T7 | - | 1 | - | 453rd |
| Singha Classic | ATGT | 22 | 2019 | T8 | - | 1 | - | 434th |
| Singha Laguna Phuket Open | ADT,ATGT | 20 | 2019 | T28 | - | 1 | - | 419th |
| Asia-Pacific Open Golf Championship Diamond Cup Golf | ASA,JPN | 19 | 2019 | T43 | - | 1 | - | 413rd |
| The 38th GS Caltex Maekyung Open Golf Championship | ASA,KOR | 18 | 2019 | MC | - | 1 | - | 393rd |
| Singha Chiang Mai Open | ATGT | 17 | 2019 | T11 | - | 1 | - | 376th |
| Hero Indian Open | ASA,EUR | 13 | 2019 | MC | - | 0.9674 | - | 379th |
| Maybank Championship | ASA,EUR | 12 | 2019 | MC | - | 0.9565 | - | 368th |
| 20th Singha Thailand Masters | ATGT | 10 | 2019 | 5 | 1.68 | 0.9348 | 1.57 | 361st |
| Thongchai Jaidee Foundation | ADT,ATGT | 7 | 2019 | MC | - | 0.9022 | - | 376th |
| Singha E-San Open | ATGT | 6 | 2019 | T15 | - | 0.8913 | - | 364th |
| SMBC Singapore Open | ASA,JPN | 3 | 2019 | T18 | 1.63 | 0.8587 | 1.4 | 359th |
| Boonchu Ruangkit Championship | ADT,ATGT | 2 | 2019 | T9 | 1.40 | 0.8478 | 1.19 | 378th |
| BNI Indonesian Masters | ASA | 50 | 2018 | T12 | 2.47 | 0.8043 | 1.99 | 409th |
| Queen's Cup hosted by Jaidee Foundation | ASA | 48 | 2018 | 5 | 3.36 | 0.7826 | 2.63 | 462nd |
| Honma Hong Kong Open presented by Amundi | ASA,EUR | 47 | 2018 | WD | - | 0.7717 | - | 530th |
| Panasonic Open India | ASA | 43 | 2018 | 65 | - | 0.7283 | - | 516th |
| Yeangder TPC | ASA | 40 | 2018 | T21 | - | 0.6957 | - | 494th |
| Mercuries Taiwan Masters | ASA | 39 | 2018 | 53 | - | 0.6848 | - | 488th |
| The 34th Shinhan Donghae Open | ASA,KOR | 37 | 2018 | MC | - | 0.663 | - | 478th |
| Taifong Open | ADT | 33 | 2018 | MC | - | 0.6196 | - | 457th |
| TAKE Solutions Masters | ASA | 32 | 2018 | MC | - | 0.6087 | - | 455th |
| Royal Cup | ASA | 30 | 2018 | T2 | 5.39 | 0.587 | 3.16 | 446th |
| Bank BRI Indonesia Open | ASA | 28 | 2018 | T3 | 4.90 | 0.5652 | 2.77 | 547th |
| Sarawak Championship | ASA | 27 | 2018 | MC | - | 0.5543 | - | 731st |
| Queen's Cup presented by Bangchak | ASA | 26 | 2018 | MC | - | 0.5435 | - | 718th |
| Kolon Korea Open Golf Championship | ASA,KOR | 25 | 2018 | T45 | - | 0.5326 | - | 704th |
| Thailand Open | ASA | 23 | 2018 | 5 | 3.36 | 0.5109 | 1.72 | 688th |
| Betagro Championship | ADT | 21 | 2018 | T10 | - | 0.4891 | - | 792nd |
| Asia-Pacific Classic | ASA,CHN | 20 | 2018 | T10 | 1.35 | 0.4783 | 0.65 | 784th |
| AB Bank Bangladesh Open | ASA | 19 | 2018 | WD | - | 0.4674 | - | 847th |
| The 37th GS Caltex Maekyung Open Golf Championship | ASA,KOR | 18 | 2018 | MC | - | 0.4565 | - | 828th |
| Leopalace21 Myanmar Open | ASA,JPN | 4 | 2018 | 65 | - | 0.3043 | - | 718th |
| SMBC Singapore Open | ASA,JPN | 3 | 2018 | T16 | 2.24 | 0.2935 | 0.66 | 715th |
| Boonchu Ruangkit Championship | ADT | 51 | 2017 | T27 | - | 0.25 | - | 805th |
| Indonesian Masters | ASA | 50 | 2017 | WD | - | 0.2391 | - | 805th |
| Thongchai Jaidee Foundation | ADT | 49 | 2017 | T17 | - | 0.2283 | - | 803rd |
| Casio World Open | JPN | 47 | 2017 | MC | - | 0.2065 | - | 799th |
| Resorts World Manila Masters | ASA | 45 | 2017 | T26 | - | 0.1848 | - | 780th |
| HEIWA PGM CHAMPIONSHIP | JPN | 44 | 2017 | WD | - | 0.1739 | - | 766th |
| Mynavi ABC Championship | JPN | 43 | 2017 | T16 | 1.25 | 0.163 | 0.2 | 744th |
| Bridgestone Open | JPN | 42 | 2017 | T57 | - | 0.1522 | - | 771st |
| Honma TourWorld Cup | JPN | 40 | 2017 | T29 | - | 0.1304 | - | 750th |
| TOP Cup Tokai Classic | JPN | 39 | 2017 | MC | - | 0.1196 | - | 738th |
| Asia-Pacific Diamond Cup Golf | ASA,JPN | 38 | 2017 | MC | - | 0.1087 | - | 721st |
| ANA Open | JPN | 37 | 2017 | MC | - | 0.0978 | - | 706th |
| ISPS Handa Match Play | JPN | 36 | 2017 | T33 | - | 0.087 | - | 693rd |
| Fujisankei Classic | JPN | 35 | 2017 | T50 | - | 0.0761 | - | 680th |
| RIZAP KBC Augusta | JPN | 34 | 2017 | MC | - | 0.0652 | - | 663rd |
| Dunlop SRIXON Fukushima Open | JPN | 30 | 2017 | T11 | 1.78 | 0.0217 | 0.04 | 619th |