| 9‑Nov‑2020 | Sofia | Hard | Q1 | 235 | 150 | (7)Martin Klizan [SVK] d. Purcell | 7-5 6-4 | | 0.93 | 13.4% | 1.5% | 59.7% | 75.0% | 44.4% | 2/4 | 1:42 |
| 26‑Oct‑2020 | Nur-Sultan | Hard | Q1 | 234 | 98 | (2)Emil Ruusuvuori [FIN] d. Purcell | 6-1 6-2 | | 0.47 | 2.1% | 2.1% | 56.3% | 51.9% | 33.3% | 6/11 | 0:58 |
| 19‑Oct‑2020 | Cologne 2 | Hard | Q1 | 233 | 91 | (5)Dennis Novak [AUT] d. Purcell | 7-6(3) 6-7(3) 7-6(3) | | 1.03 | 10.3% | 2.4% | 64.3% | 63.0% | 60.0% | 7/10 | 2:26 |
| 12‑Oct‑2020 | St Petersburg | Hard | Q1 | 232 | 141 | (2)Ilya Ivashka [BLR] d. Purcell | 7-5 6-4 | | 0.71 | 5.9% | 2.9% | 70.6% | 70.8% | 45.0% | 4/6 | 1:29 |
| 28‑Sep‑2020 | Roland Garros | Clay | Q2 | 228 | 116 | (7)Aslan Karatsev [RUS] d. Purcell | 6-4 6-1 | | 0.62 | 5.5% | 3.6% | 65.5% | 55.6% | 26.3% | 3/8 | 1:09 |
| 28‑Sep‑2020 | Roland Garros | Clay | Q1 | 228 | 290 | Purcell d. (WC)Manuel Guinard [FRA] | 6-4 6-4 | | 1.03 | 7.8% | 1.3% | 61.0% | 83.0% | 40.0% | 5/5 | 1:40 |
| 7‑Sep‑2020 | Kitzbuhel | Clay | Q1 | 220 | 89 | (8)Andreas Seppi [ITA] d. (Alt)Purcell | 1-6 6-2 6-4 | | 0.96 | 7.6% | 3.8% | 63.3% | 58.0% | 58.6% | 1/5 | 1:40 |
| 2‑Mar‑2020 | Monterrey CH | Hard | R64 | 212 | 242 | Gian Marco Moroni [ITA] d. Purcell | 6-3 3-0 RET | | 0.70 | 3.0% | 3.0% | 54.5% | 50.0% | 40.0% | 1/5 | 0:51 |
| 24‑Feb‑2020 | Acapulco | Hard | Q1 | 210 | 110 | (3)Taro Daniel [JPN] d. (Alt)Purcell | 6-3 4-3 RET | | 0.48 | 0.0% | 1.9% | 59.6% | 74.2% | 28.6% | 0/3 | 0:59 |
| 17‑Feb‑2020 | Drummondville CH | Hard | R16 | 207 | 232 | (11)Sebastian Korda [USA] d. (7)Purcell | 6-7(5) 6-1 6-0 | | 0.73 | 3.3% | 4.4% | 71.1% | 51.6% | 34.6% | 9/18 | 1:45 |
| 17‑Feb‑2020 | Drummondville CH | Hard | R32 | 207 | 380 | (7)Purcell d. Ryan Peniston [GBR] | 6-2 6-4 | | 1.29 | 18.6% | 3.4% | 72.9% | 81.4% | 25.0% | 3/4 | 1:06 |
| 3‑Feb‑2020 | Launceston CH | Hard | R32 | 205 | 305 | Harry Bourchier [AUS] d. (10)Purcell | 7-5 6-3 | | 0.88 | 5.6% | 0.0% | 74.1% | 65.0% | 57.1% | 0/3 | 1:26 |
| 20‑Jan‑2020 | Australian Open | Hard | R128 | 216 | 82 | Jannik Sinner [ITA] d. (Q)Purcell | 7-6(2) 6-2 6-4 | | 0.72 | 2.8% | 2.8% | 67.0% | 59.2% | 48.6% | 4/9 | 2:19 |
| 20‑Jan‑2020 | Australian Open | Hard | Q3 | 216 | 139 | Purcell d. (26)Jozef Kovalik [SVK] | 6-4 6-2 | | 1.36 | 13.2% | 0.0% | 58.5% | 77.4% | 50.0% | 1/2 | 1:12 |
| 20‑Jan‑2020 | Australian Open | Hard | Q2 | 216 | 117 | Purcell d. (13)Gianluca Mager [ITA] | 6-3 4-6 6-4 | | 1.26 | 11.5% | 1.3% | 57.7% | 68.9% | 60.6% | 2/5 | 1:53 |
| 20‑Jan‑2020 | Australian Open | Hard | Q1 | 216 | 192 | Purcell d. Andrea Collarini [ARG] | 7-6(2) 6-7(4) 6-4 | | 1.09 | 10.6% | 2.9% | 65.4% | 73.5% | 63.9% | 0/1 | 2:35 |
| 6‑Jan‑2020 | Bendigo CH | Hard | R64 | 214 | 137 | Zhizhen Zhang [CHN] d. (WC)Purcell | 6-2 6-4 | | 0.73 | 10.6% | 6.4% | 70.2% | 69.7% | 35.7% | 1/4 | 1:02 |
