Mikumu Horikawa
BY YEAR
| Japan Open Golf Championship | JPN | 42 | 2019 | T2 | 16.00 | 1 | 16 | 144th |
| Bridgestone Open | JPN | 41 | 2019 | T41 | - | 1 | - | 200th |
| Top Cup Tokai Classic | JPN | 40 | 2019 | T10 | 2.16 | 1 | 2.16 | 195th |
| Panasonic Open Golf Championship | ASA,JPN | 39 | 2019 | MC | - | 1 | - | 204th |
| Shinhan Donghae Open | ASA,JPN,KOR | 38 | 2019 | T18 | - | 1 | - | 199th |
| ANA Open | JPN | 37 | 2019 | T38 | - | 1 | - | 198th |
| Fujisankei Classic | JPN | 36 | 2019 | T28 | - | 1 | - | 194th |
| RIZAP KBC Augusta | JPN | 35 | 2019 | MC | - | 1 | - | 192nd |
| Shigeo Nagashima Invitational SEGASAMMY Cup | JPN | 34 | 2019 | T6 | 2.88 | 1 | 2.88 | 185th |
| Sarawak Championship | ASA | 33 | 2019 | MC | - | 1 | - | 195th |
| WGC - FedEx St Jude Invitational | WGC | 30 | 2019 | T58 | 1.21 | 1 | 1.21 | 197th |
| 148th Open Championship | MAJ | 29 | 2019 | MC | - | 0.9891 | - | 201st |
| Japan PGA Championship | JPN | 27 | 2019 | T19 | 1.20 | 0.9674 | 1.16 | 193rd |
| Dunlop SRIXON Fukushima Open | JPN | 26 | 2019 | T22 | - | 0.9565 | - | 196th |
| U.S. Open | MAJ | 24 | 2019 | MC | - | 0.9348 | - | 185th |
| JGTC Mori Building Cup Shishido Hills | JPN | 23 | 2019 | 1 | 16.00 | 0.9239 | 14.78 | 182nd |
| Gate Way To The Open Mizuno Open at The Royal GC | JPN | 22 | 2019 | T22 | - | 0.913 | - | 269th |
| Kansai Open Golf Championship | JPN | 21 | 2019 | T25 | - | 0.9022 | - | 267th |
| Asia-Pacific Open Golf Championship Diamond Cup Golf | ASA,JPN | 19 | 2019 | MC | - | 0.8804 | - | 262nd |
| The Crowns | JPN | 18 | 2019 | T20 | - | 0.8696 | - | 251st |
| Token Homemate Cup | JPN | 16 | 2019 | MC | - | 0.8478 | - | 241st |
| Bangabandhu Cup Golf Open | ASA | 14 | 2019 | T10 | 1.89 | 0.8261 | 1.56 | 244th |
| 100th New Zealand Open | ANZ,ASA | 9 | 2019 | MC | - | 0.7717 | - | 236th |
| SMBC Singapore Open | ASA,JPN | 3 | 2019 | MC | - | 0.7065 | - | 219th |
| Golf Nippon Series JT Cup 2018 | JPN | 48 | 2018 | T5 | 3.51 | 0.6304 | 2.21 | 209th |
| Casio World Open | JPN | 47 | 2018 | T13 | 1.63 | 0.6196 | 1.01 | 229th |
| Dunlop Phoenix Tournament | JPN | 46 | 2018 | 2 | 18.00 | 0.6087 | 10.96 | 241st |
| Mitsui Sumitomo VISA Taiheiyo Masters | JPN | 45 | 2018 | T40 | - | 0.5978 | - | 500th |
| HEIWA PGM CHAMPIONSHIP | JPN | 44 | 2018 | T46 | - | 0.587 | - | 499th |
| Mynavi ABC Championship | JPN | 43 | 2018 | T48 | - | 0.5761 | - | 493rd |
| Bridgestone Open | JPN | 42 | 2018 | T4 | 3.95 | 0.5652 | 2.23 | 485th |
| Japan Open Golf Championship | JPN | 41 | 2018 | MC | - | 0.5543 | - | 596th |
| Top Cup Tokai Classic | JPN | 39 | 2018 | 63 | - | 0.5326 | - | 586th |
| Asia-Pacific Diamond Cup Golf | ASA,JPN | 38 | 2018 | T37 | - | 0.5217 | - | 575th |
| ISPS Handa Match Play | JPN | 36 | 2018 | T17 | 1.23 | 0.5 | 0.62 | 595th |
| Fujisankei Classic | JPN | 35 | 2018 | MC | - | 0.4891 | - | 590th |
| RIZAP KBC Augusta | JPN | 34 | 2018 | T11 | 1.72 | 0.4783 | 0.82 | 582nd |
| Shigeo Nagashima Invitational SEGA SAMMY Cup | JPN | 27 | 2018 | MC | - | 0.4022 | - | 596th |
| Dunlop SRIXON Fukushima Open | JPN | 25 | 2018 | T12 | 1.76 | 0.3804 | 0.67 | 593rd |
| JGT Championship Mori Building Cup Shishido Hills | JPN | 22 | 2018 | T38 | - | 0.3478 | - | 618th |
| Gate Way To The Open Mizuno Open at The Royal GC | JPN | 21 | 2018 | T23 | - | 0.337 | - | 612nd |
| Kansai Open Golf Championship | JPN | 20 | 2018 | MC | - | 0.3261 | - | 600th |
| Japan PGA Championship | JPN | 19 | 2018 | T12 | 1.60 | 0.3152 | 0.5 | 583rd |
| The Crowns | JPN | 17 | 2018 | MC | - | 0.2935 | - | 627th |
| Panasonic Open Championship | ASA,JPN | 16 | 2018 | T20 | - | 0.2826 | - | 616th |
| Token Homemate Cup | JPN | 15 | 2018 | T10 | 2.00 | 0.2717 | 0.54 | 607th |
| ISPS HANDA New Zealand Open | ANZ,ASA | 9 | 2018 | T29 | - | 0.2065 | - | 656th |
| Leopalace21 Myanmar Open | ASA,JPN | 4 | 2018 | T14 | 1.72 | 0.1522 | 0.26 | 636th |
| SMBC Singapore Open | ASA,JPN | 3 | 2018 | T47 | - | 0.1413 | - | 692nd |
| Casio World Open | JPN | 47 | 2017 | MC | - | 0.0543 | - | 684th |
| Dunlop Phoenix Tournament | JPN | 46 | 2017 | T27 | 1.42 | 0.0435 | 0.06 | 665th |
| Mitsui Sumitomo VISA Taiheiyo Masters | JPN | 45 | 2017 | T28 | - | 0.0326 | - | 729th |