| Challenger Matsuyama | 11/07 03:05 | 25 | [172] Kaichi Uchida v Yasutaka Uchiyama [317] | 6-3,7-6 | |
| Challenger Yokohama | 11/04 03:10 | 27 | [227] Yosuke Watanuki v Kaichi Uchida [172] | 7-5,4-6,6-3 | |
| Challenger Yokohama | 11/02 03:25 | 26 | [384] Yunseong Chung v Kaichi Uchida [172] | 6-7,3-6 | |
| Challenger Yokohama | 11/01 02:15 | 25 | [382] Seong Chan Hong v Kaichi Uchida [172] | 6-3,5-7,3-6 | |
| Challenger Busan | 10/18 01:30 | 25 | [160] Kaichi Uchida v Jisung Nam [224] | 3-6,3-6 | |
| Challenger Seoul | 10/11 04:05 | 25 | [163] Kaichi Uchida v Li Tu [292] | 4-6,0-6 | |
| ATP Tokyo | 10/04 02:00 | 25 | [78] Mackenzie McDonald v Kaichi Uchida [155] | 7-6,6-7,6-3 | |
| ATP Seoul | 09/29 03:00 | 26 | [163] Kaichi Uchida v Cameron Norrie [8] | 2-6,2-6 | |
| ATP Seoul | 09/26 10:00 | 25 | [471] Seong Chan Hong v Kaichi Uchida [163] | 4-6,2-6 | |
| ATP Seoul | 09/24 02:00 | 14 | [161] Kaichi Uchida v Hiroki Moriya [259] | Cancelled | |
| Challenger Cassis | 09/09 11:00 | 27 | [119] Hugo Grenier v Kaichi Uchida [168] | 6-4,7-6 | |
| Challenger Cassis | 09/07 10:25 | 26 | [224] Evan Furness v Kaichi Uchida [168] | 4-6,1-6 | |
| Challenger Cassis | 09/05 15:25 | 25 | [499] Clement Chidekh v Kaichi Uchida [168] | 6-4,3-6,4-6 | |
| Challenger Mallorca | 08/31 15:20 | 25 | [232] Dmitry Popko v Kaichi Uchida [168] | 5-7,6-4,6-2 | |
| US Open | 08/25 23:10 | 15 | [106] Facundo Bagnis v Kaichi Uchida [169] | 6-2,6-3 | |
| US Open | 08/24 21:00 | 14 | Kaichi Uchida v Dudi Sela | 6-3,6-3 | |
| Challenger Vancouver | 08/16 01:00 | 25 | [168] Kaichi Uchida v Elias Ymer [135] | 6-7,4-6 | |
| Challenger Chicago | 08/10 20:40 | 25 | [189] Antoine Escoffier v Kaichi Uchida [169] | 7-6,6-3 | |
| ATP Los Cabos | 08/03 02:40 | 25 | [175] Kaichi Uchida v Brandon Nakashima [61] | 6-7,2-6 | |
| ATP Los Cabos | 08/01 03:25 | 19 | [177] Kaichi Uchida v Nicolas Barrientos [350] | 6-1,4-6,6-4 | |
| ATP Los Cabos | 07/31 02:35 | 14 | [177] Kaichi Uchida v Matthew Ebden [33] | 6-2,6-2 | |
| Challenger Winnipeg | 07/28 15:30 | 26 | [372] Evan Zhu v Kaichi Uchida [177] | 6-4,5-7,6-4 | |
| Challenger Winnipeg | 07/25 20:25 | 25 | [266] Roberto Quiroz v Kaichi Uchida [177] | 1-6,7-6,3-6 | |
| Challenger Porto | 07/08 12:00 | 27 | [203] Kaichi Uchida v Christopher O'Connell [108] | 4-6,2-6 | |
| Challenger Porto | 07/06 14:05 | 26 | [365] Kenny de Schepper v Kaichi Uchida [203] | 5-7,3-6 | |
| Challenger Porto | 07/04 13:15 | 25 | [203] Kaichi Uchida v Illya Marchenko [277] | 7-6,7-6 | |
| Challenger Malaga | 06/30 12:00 | 26 | [151] Emilio Gomez v Kaichi Uchida [203] | 6-1,6-4 | |
| Challenger Malaga | 06/28 13:05 | 25 | [195] Dmitry Popko v Kaichi Uchida [203] | 4-6,1-6 | |
| Challenger Oeiras | 06/26 10:00 | 29 | [339] Kimmer Coppejans v Kaichi Uchida [258] | 2-6,4-6 | |
| Challenger Oeiras | 06/25 09:00 | 28 | [258] Kaichi Uchida v Facundo Bagnis [110] | 7-5,7-6 |
Wikipedia - Kaichi Uchida
Kaichi Uchida (内田 海智, Uchida Kaichi, born 23 August 1994) is a Japanese professional tennis player.
Uchida has a career high ATP singles ranking of No. 147 achieved on 8 May 2023. He also has a career high ATP doubles ranking of No. 159 achieved on 28 November 2022.
Uchida has won two Challengers and reached 14 ITF Futures singles finals, where he won the title on 8 occasions. Additionally, he has won one Challenger title and reached 17 ITF Futures doubles finals, and won the title 11 times.
History
2021: Maiden Challenger title
He won his first career ATP Challenger Tour singles title in December 2021 in Rio de Janeiro, Brazil where he defeated Nicolás Álvarez Varona of Spain.
2022: ATP debut and first win
He made his ATP debut at the 2022 Los Cabos Open as a qualifier.
Having received a wildcard, he recorded his first ATP main-draw match win at the Korea Open defeating wildcard Hong Seong-chan.
2023: Top 150 debut
He reached the top 150 on 24 April 2023.