Name: Erina Hayashi
Country: Japan
Birthdate: 21.07.94, 25 years
WTA ranking: 435
TOP ranking's position: 403 (29.07.19, 9000 points)
Points: 91
Prize money: 21317 $
Matches total: 114
Win: 70
%: 61.4 %
Country: Japan
Birthdate: 21.07.94, 25 years
WTA ranking: 435
TOP ranking's position: 403 (29.07.19, 9000 points)
Points: 91
Prize money: 21317 $
Matches total: 114
Win: 70
%: 61.4 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2019 | 18/9 | 10/3 | 2/3 | 0/0 | 6/3 | 0/0 | 0/0 |
| 2018 | 13/14 | 4/6 | 2/3 | 0/0 | 7/5 | 0/0 | 0/0 |
| 2017 | 23/11 | 13/9 | 0/0 | 0/0 | 10/2 | 0/0 | 0/0 |
| 2016 | 15/8 | 14/6 | 0/0 | 0/0 | 1/1 | 0/1 | 0/0 |
| 2014 | 1/2 | 1/2 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 70/44 | 42/26 | 4/6 | 0/0 | 24/11 | 0/1 | 0/0 |
| perc. % | 61.4 % | 61.76 % | 40 % | 0 % | 68.57 % | 0 % | 0 % |
Erina Hayashi / scheduled / last
| 21.08.19 22:10 | 2nd round | Momoko Kobori  | Erina Hayashi | 7-68, 7-5 | match details |  W25 Tsukuba | Hard |
Erina Hayashi / last 50 matches
| 22.08.19 | 2nd round | Momoko Kobori | Erina Hayashi | 7-68, 7-5 |  | match details | W25 Tsukuba | Hard |
| 21.08.19 | 1st round | Erina Hayashi | Yuuki Tanaka | 1-6, 6-3, 6-2 |  | match details | ||
| 31.07.19 | 1st round | Haruka Kaji | Erina Hayashi | 6-4, 6-2 | | match details | .png){kind=small} W25 Taipei | Hard |
| 18.07.19 | 2nd round | Ekaterina Makarova (1996) | Erina Hayashi | 6-1, 6-2 | | match details |  W25 Aschaffenburg | Clay |
| 17.07.19 | 1st round | Erina Hayashi | Quirine Lemoine | 6-2, 6-4 | | match details | ||
| 02.07.19 | qual. | Laura Pigossi | Erina Hayashi | 7-62, 6-3 | | match details |  W25 Biella | Clay |
| 01.07.19 | q 1 | Erina Hayashi | Marie Mettraux | 6-4, 6-4 | | match details | ||
| 25.06.19 | qual. | Rasheeda Mcadoo | Erina Hayashi | 6-3, 2-6, 13-11 | | match details | W25 Tarvisio | Clay |
| 01.06.19 | fin | Erina Hayashi | Jia-Jing Lu | 6-3, 3-0, Jia-Jing Lu - retired | | match details |  W25 Hong | Hard |
| 01.06.19 | 1/4 | Erina Hayashi | Momoko Kobori | 7-5, 6-2 | | match details | ||
| 01.06.19 | 1/2 | Erina Hayashi | Ho Ching Wu | 7-5, 6-1 | | match details | ||
| 31.05.19 | 2nd round | Erina Hayashi | Abigail Tere-Apisah | 7-62, 6-1 | | match details | ||
| 30.05.19 | 1st round | Erina Hayashi | Wing Kiu Jacqueline Lam | 6-1, 6-0 | | match details | ||
| 28.05.19 | qual. | Erina Hayashi | Sakura Hosogi | 4-6, 6-3, 14-12 | | match details | ||
| 25.05.19 | 1/2 | Momoko Kobori | Erina Hayashi | 6-4, 6-3 | | match details | W25 Karuizawa | Carpet |
| 24.05.19 | 1/4 | Erina Hayashi | Naomi Broady | 6-3, 6-2 | | match details | ||
| 23.05.19 | 2nd round | Erina Hayashi | Kanako Morisaki | 7-5, 6-4 | | match details | ||
| 22.05.19 | 1st round | Erina Hayashi | Himeno Sakatsume | 2-6, 7-65, 6-1 | | match details | ||
| 21.05.19 | qual. | Erina Hayashi | Hiromi Abe | 6-2, 6-3 | | match details | ||
| 20.05.19 | q 1 | Erina Hayashi | Aoi Ishino | 6-2, 6-0 | | match details | ||
| 13.05.19 | q 1 | Ramu Ueda | Erina Hayashi | 6-3, 1-6, 10-8 | | match details | W60 Kurume | Carpet |
| 06.05.19 | q 1 | Erina Hayashi | Tara Moore | 2-6, 6-1, 10-6 | | match details | W60 Fukuoka | Carpet |
| 06.05.19 | qual. | Leonie Kung | Erina Hayashi | 6-3, 7-62 | | match details | ||
| 11.04.19 | 2nd round | Mai Hontama | Erina Hayashi | 6-4, 6-2 | | match details | W25 Hong | Hard |
| 10.04.19 | 1st round | Erina Hayashi | Miyabi Inoue | 6-4, 2-6, 6-3 | | match details | ||
| 09.04.19 | qual. | Erina Hayashi | Mahak Jain | 7-63, 6-2 | | match details | ||
| 08.04.19 | q 1 | Erina Hayashi | Charmaine Shi Yi Seah | 6-4, 6-3 | | match details | ||
| 15.10.18 | qual. | Himeno Sakatsume | Erina Hayashi | 3-6, 6-4, 6-1 | | match details | Hamamatsu | Carpet |
| 14.10.18 | q 2 | Erina Hayashi | Eimi Friant | 6-0, 6-3 | | match details | ||
| 14.10.18 | q 1 | Erina Hayashi | Yukino Tachibana | 6-0, 6-1 | | match details | ||
| 10.10.18 | 2nd round | Junri Namigata | Erina Hayashi | 6-1, 6-3 | | match details | Makinohara | Carpet |
| 10.10.18 | 1st round | Erina Hayashi | Suzuho Oshino | 6-1, 6-3 | | match details | ||
| 08.10.18 | qual. | Erina Hayashi | Honoka Kobayashi | 7-61, 6-4 | | match details | ||
| 07.10.18 | q 1 | Erina Hayashi | Yuri Nakayama | 6-3, 6-0 | | match details | ||
| 05.09.18 | 1st round | Hanna Chang | Erina Hayashi | 6-1, 6-4 | | match details |  Yeongwol | Hard |
| 28.05.18 | 1st round | Watsachol Sawasdee | Erina Hayashi | 6-72, 5-4, Erina Hayashi - retired | | match details |  Hua Hin | Hard |
| 15.05.18 | 1st round | Abigail Tere-Apisah | Erina Hayashi | 6-1, 6-2 | | match details | Kurume | Carpet |
| 09.05.18 | 1st round | Rika Fujiwara | Erina Hayashi | 6-4, 6-4 | | match details | Fukuoka | Carpet |
| 08.05.18 | qual. | Tara Moore | Erina Hayashi | 6-74, 6-2, 6-3 | | match details | ||
| 07.05.18 | q 2 | Erina Hayashi | Yukina Saigo | 6-4, 7-5 | | match details | ||
| 06.05.18 | q 1 | Erina Hayashi | Haruna Sakamoto | 6-1, 6-2 | | match details | ||
| 30.04.18 | qual. | Hiroko Kuwata | Erina Hayashi | 6-2, 7-65 | | match details | Gifu | Hard |
| 29.04.18 | q 1 | Erina Hayashi | Dabin Kim | 7-64, 6-3 | | match details | ||
| 29.04.18 | q 2 | Erina Hayashi | Emily Webley-Smith | 6-4, 4-6, 6-4 | | match details | ||
| 09.04.18 | qual. | Makoto Ninomiya | Erina Hayashi | 1-6, 7-64, 6-2 | | match details | Osaka | Hard |
| 08.04.18 | q 2 | Erina Hayashi | Mai Hontama | 6-0, 6-4 | | match details | ||
| 08.04.18 | q 1 | Erina Hayashi | Michiru Furuya | 6-3, 6-3 | | match details | ||
| 20.03.18 | 1st round | Ayaka Okuno | Erina Hayashi | 6-0, 6-73, 6-3 | | match details | Nishi Tama | Hard |
| 10.03.18 | q 1 | Aiko Yoshitomi | Erina Hayashi | 6-2, 6-1 | | match details | Toyota | Hard |
| 26.02.18 | 1st round | Eden Silva | Erina Hayashi | 6-2, 6-3 | | match details |  Palmanova | Clay |