Stadium: Centre Court Round: 28 Ground: Hardcourt outdoor
| ATP Tokyo Qual | 2017/09/30 07:10 | Vasek Pospisil v Yosuke Watanuki | 7-6,7-6 |
| Challenger Drummondville | 2018/03/17 19:05 | Vasek Pospisil v Benjamin Bonzi | 5-7,6-3,1-6 |
| Challenger Drummondville | 2018/03/16 22:30 | Vasek Pospisil v Evan King | 7-6,6-4 |
| Challenger Drummondville | 2018/03/15 22:30 | Vasek Pospisil v Nicolaas Scholtz | 7-6,7-5 |
| Challenger Drummondville | 2018/03/14 22:30 | Vasek Pospisil v Ante Pavic | 7-5,6-3 |
| ATP Indian Wells | 2018/03/10 01:55 | Vasek Pospisil v Felix Auger Aliassime | 2-6,6-7 |
| ATP Indian Wells Qual | 2018/03/07 23:15 | Vasek Pospisil v Adrian Menendez-Maceiras | 7-6,6-2 |
| ATP Indian Wells Qual | 2018/03/06 22:15 | Vasek Pospisil v Brandon Nakashima | 6-0,7-6 |
| Challenger Indian Wells | 2018/03/03 20:00 | Vasek Pospisil v Martin Klizan | 1-6,6-3,1-6 |
| Challenger Yokohama | 2018/02/27 05:35 | Daniel Nguyen v Yosuke Watanuki | 6-2,6-4 |
| Challenger Kyoto | 2018/02/19 04:50 | Go Soeda v Yosuke Watanuki | 7-6,0-6,7-6 |
| Challenger Canberra | 2018/01/08 01:15 | Yosuke Watanuki v Florian Mayer | 7-5,1-6,4-6 |
| Australian Open WC | 2017/11/30 03:15 | Yosuke Watanuki v Zhe Li | 3-6,2-6 |
| Challenger Toyota | 2017/11/14 04:15 | Yosuke Watanuki v Yasutaka Uchiyama | 4-6,4-6 |
| Challenger Kobe | 2017/11/10 04:40 | Yosuke Watanuki v Soonwoo Kwon | 7-5,3-6,5-7 |
| Challenger Kobe | 2017/11/09 05:15 | Radu Albot v Yosuke Watanuki | 7-5,2-6,0-6 |
| Challenger Kobe | 2017/11/07 04:35 | Yusuke Takahashi v Yosuke Watanuki | 5-7,2-6 |