13‑Nov‑2023 | Drummondville CH | Hard | QF | 82 | 174 | (6)Zizou Bergs [BEL] d. (1)Koepfer | 6-4 4-6 7-5 | | 0.98 | 4.6% | 5.7% | 60.9% | 67.9% | 47.1% | 2/7 | 2:21 |
13‑Nov‑2023 | Drummondville CH | Hard | R16 | 82 | 558 | (1)Koepfer d. (LL)Olaf Pieczkowski [POL] | 6-4 6-4 | | 1.49 | 11.1% | 5.6% | 57.4% | 80.6% | 65.2% | 3/4 | 1:14 |
13‑Nov‑2023 | Drummondville CH | Hard | R32 | 82 | 549 | (1)Koepfer d. (Q)Luca Wiedenmann [GER] | 5-7 6-2 6-2 | | 1.21 | 8.0% | 6.8% | 67.0% | 72.9% | 51.7% | 5/7 | 1:37 |
6‑Nov‑2023 | Calgary CH | Hard | F | 71 | 430 | (WC)Liam Draxl [CAN] d. (1)Koepfer | 6-4 6-3 | | 0.85 | 7.8% | 9.8% | 64.7% | 69.7% | 38.9% | 2/5 | 1:21 |
6‑Nov‑2023 | Calgary CH | Hard | SF | 71 | 133 | (1)Koepfer d. Gabriel Diallo [CAN] | W/O | | | | | | | | | |
6‑Nov‑2023 | Calgary CH | Hard | QF | 71 | 180 | (1)Koepfer d. (6)Zizou Bergs [BEL] | 6-1 6-3 | | 2.05 | 8.9% | 4.4% | 57.8% | 88.5% | 57.9% | 0/0 | 1:04 |
6‑Nov‑2023 | Calgary CH | Hard | R16 | 71 | 397 | (1)Koepfer d. Clement Chidekh [FRA] | 6-3 6-3 | | 1.70 | 9.6% | 5.8% | 61.5% | 71.9% | 75.0% | 2/2 | 1:21 |
6‑Nov‑2023 | Calgary CH | Hard | R32 | 71 | 323 | (1)Koepfer d. Charles Broom [GBR] | 6-2 6-3 | | 1.53 | 5.7% | 9.4% | 54.7% | 79.3% | 54.2% | 2/2 | 1:09 |
30‑Oct‑2023 | Paris Masters | Hard | Q1 | 75 | 59 | (10)Marcos Giron [USA] d. Koepfer | 7-6(5) 6-3 | | 0.69 | 5.7% | 4.3% | 57.1% | 67.5% | 46.7% | 2/4 | 1:28 |
23‑Oct‑2023 | Basel | Hard | Q2 | 79 | 163 | (Alt)Benjamin Hassan [LBN] d. (6)Koepfer | 6-2 2-6 6-4 | | 0.99 | 1.2% | 2.4% | 70.7% | 62.1% | 58.3% | 5/9 | 1:49 |
23‑Oct‑2023 | Basel | Hard | Q1 | 79 | 170 | (6)Koepfer d. (Alt)Sumit Nagal [IND] | 3-6 6-1 7-6(3) | | 1.32 | 6.4% | 2.6% | 62.8% | 69.4% | 75.9% | 1/3 | 1:59 |
16‑Oct‑2023 | Antwerp | Hard | R32 | 78 | 74 | Nuno Borges [POR] d. Koepfer | 7-6(6) 6-4 | | 0.77 | 8.6% | 2.5% | 67.9% | 67.3% | 50.0% | 4/7 | 1:37 |
28‑Aug‑2023 | US Open | Hard | R128 | 75 | 1 | (1)Carlos Alcaraz [ESP] d. Koepfer | 6-2 3-2 RET | (ch) | 0.43 | 1.8% | 3.6% | 65.5% | 61.1% | 31.6% | 8/11 | 1:00 |
21‑Aug‑2023 | Winston-Salem | Hard | R16 | 78 | 35 | (5)Jiri Lehecka [CZE] d. Koepfer | 6-3 3-6 6-4 | | 1.01 | 2.3% | 2.3% | 55.8% | 70.8% | 65.8% | 2/4 | 2:00 |
21‑Aug‑2023 | Winston-Salem | Hard | R32 | 78 | 416 | Koepfer d. (LL)Strong Kirchheimer [USA] | 6-3 6-2 | | 1.81 | 11.1% | 1.9% | 59.3% | 68.8% | 81.8% | 3/4 | 1:21 |
21‑Aug‑2023 | Winston-Salem | Hard | R64 | 78 | 103 | Koepfer d. Constant Lestienne [FRA] | 6-4 3-6 7-6(8) | | 1.11 | 9.2% | 13.8% | 56.0% | 73.8% | 47.9% | 8/12 | 2:40 |
31‑Jul‑2023 | Los Cabos | Hard | SF | 84 | 19 | (5)Alex De Minaur [AUS] d. (7)Koepfer | 6-2 6-7(5) 6-1 | | 0.71 | 1.2% | 3.6% | 65.5% | 54.5% | 44.8% | 2/9 | 2:24 |
31‑Jul‑2023 | Los Cabos | Hard | QF | 84 | 129 | (7)Koepfer d. Aleksandar Kovacevic [USA] | 6-4 7-5 | | 1.42 | 13.1% | 6.6% | 60.7% | 75.7% | 54.2% | 5/7 | 1:53 |
31‑Jul‑2023 | Los Cabos | Hard | R16 | 84 | 123 | (7)Koepfer d. James Duckworth [AUS] | 6-2 6-2 | | 2.04 | 8.2% | 4.1% | 61.2% | 80.0% | 68.4% | 1/1 | 1:14 |
31‑Jul‑2023 | Los Cabos | Hard | R32 | 84 | 121 | (7)Koepfer d. Tomas Barrios Vera [CHI] | 6-4 6-3 | | 2.02 | 4.3% | 0.0% | 72.3% | 82.4% | 69.2% | 0/0 | 1:31 |
24‑Jul‑2023 | Atlanta | Hard | QF | 88 | 46 | (8)J J Wolf [USA] d. Koepfer | 6-2 6-3 | | 0.58 | 13.3% | 4.4% | 64.4% | 65.5% | 25.0% | 2/6 | 1:12 |
24‑Jul‑2023 | Atlanta | Hard | R16 | 88 | 30 | Koepfer d. (3)Daniel Evans [GBR] | 2-6 7-6(3) 6-4 | | 1.06 | 10.6% | 2.1% | 71.3% | 71.6% | 48.1% | 10/14 | 2:30 |
24‑Jul‑2023 | Atlanta | Hard | R32 | 88 | 103 | Koepfer d. (SE)John Isner [USA] | 3-6 7-6(4) 7-6(3) | | 1.06 | 4.0% | 1.0% | 63.6% | 84.1% | 66.7% | 6/7 | 2:20 |
3‑Jul‑2023 | Wimbledon | Grass | R128 | 86 | 233 | (Q)Oscar Otte [GER] d. Koepfer | 7-5 6-3 7-6(9) | | 0.93 | 2.8% | 2.8% | 58.5% | 72.6% | 52.3% | 3/7 | 2:08 |
12‑Jun‑2023 | Nottingham CH | Grass | SF | 95 | 181 | (Q)Arthur Cazaux [FRA] d. (5)Koepfer | 7-5 6-2 | | 0.64 | 0.0% | 1.8% | 71.4% | 55.0% | 68.8% | 0/3 | 1:22 |
12‑Jun‑2023 | Nottingham CH | Grass | QF | 95 | 414 | (5)Koepfer d. (WC)George Loffhagen [GBR] | 7-5 4-6 6-3 | | 1.04 | 2.8% | 5.5% | 61.5% | 70.1% | 57.1% | 6/8 | 2:26 |
12‑Jun‑2023 | Nottingham CH | Grass | R16 | 95 | 409 | (5)Koepfer d. (WC)Arthur Fery [GBR] | 6-4 6-2 | | 1.67 | 6.0% | 8.0% | 64.0% | 81.3% | 50.0% | 2/3 | 1:03 |
12‑Jun‑2023 | Nottingham CH | Grass | R32 | 95 | 186 | (5)Koepfer d. (LL)Laurent Lokoli [FRA] | 6-2 6-4 | | 1.55 | 7.5% | 0.0% | 73.6% | 74.4% | 71.4% | 3/3 | 1:09 |
29‑May‑2023 | Roland Garros | Clay | Q3 | 103 | 172 | Thiago Seyboth Wild [BRA] d. Koepfer | 6-1 6-1 | | 0.50 | 0.0% | 8.6% | 85.7% | 46.7% | 0.0% | 0/5 | |
29‑May‑2023 | Roland Garros | Clay | Q2 | 103 | 239 | Koepfer d. Federico Delbonis [ARG] | 6-1 7-6(5) | | 1.46 | 1.6% | 1.6% | 67.2% | 73.2% | 55.0% | 2/3 | |
29‑May‑2023 | Roland Garros | Clay | Q1 | 103 | 125 | Koepfer d. (13)Zsombor Piros [HUN] | 7-5 2-6 6-1 | | 1.14 | 8.0% | 3.4% | 69.3% | 62.3% | 51.9% | 2/6 | |
15‑May‑2023 | Turin CH | Clay | F | 149 | 337 | (Alt)Koepfer d. (Q)Federico Gaio [ITA] | 6-7(5) 6-2 6-0 | | 1.38 | 15.9% | 2.3% | 75.0% | 69.7% | 59.1% | 5/6 | 1:49 |
15‑May‑2023 | Turin CH | Clay | SF | 149 | 94 | (Alt)Koepfer d. (2)Daniel Elahi Galan [COL] | 6-4 6-2 | | 2.08 | 15.6% | 2.2% | 68.9% | 87.1% | 64.3% | 0/0 | 0:58 |
15‑May‑2023 | Turin CH | Clay | QF | 149 | 357 | (Alt)Koepfer d. (WC)Edoardo Lavagno [ITA] | 6-3 6-1 | | 1.79 | 2.2% | 0.0% | 63.0% | 75.9% | 58.8% | 0/1 | 1:08 |
15‑May‑2023 | Turin CH | Clay | R16 | 149 | 97 | (Alt)Koepfer d. (3)Juan Pablo Varillas [PER] | 6-4 5-7 7-5 | | 1.08 | 5.4% | 2.7% | 55.0% | 68.9% | 48.0% | 8/13 | 2:49 |
15‑May‑2023 | Turin CH | Clay | R32 | 149 | 120 | (Alt)Koepfer d. (Alt)Giulio Zeppieri [ITA] | 6-2 6-2 | | 2.07 | 7.1% | 0.0% | 59.5% | 88.0% | 52.9% | 0/1 | 1:08 |
8‑May‑2023 | Prague CH | Clay | F | 149 | 333 | (WC)Jakub Mensik [CZE] d. (6)Koepfer | 6-4 6-3 | | 0.67 | 6.3% | 3.2% | 66.7% | 61.9% | 38.1% | 3/7 | 1:18 |
8‑May‑2023 | Prague CH | Clay | SF | 149 | 204 | (6)Koepfer d. Nicolas Kicker [ARG] | 6-4 6-3 | | 1.30 | 3.8% | 1.3% | 70.5% | 56.4% | 39.1% | 7/12 | 1:41 |
8‑May‑2023 | Prague CH | Clay | QF | 149 | 136 | (6)Koepfer d. (4)Lukas Klein [SVK] | 6-4 6-7(6) 6-1 | | 1.35 | 3.2% | 5.3% | 66.3% | 76.2% | 46.9% | 6/8 | 2:12 |
8‑May‑2023 | Prague CH | Clay | R16 | 149 | 288 | (6)Koepfer d. Evan Furness [FRA] | 7-6(6) 0-0 RET | | 0.99 | 12.5% | 7.1% | 62.5% | 65.7% | 42.9% | 6/8 | 1:11 |
8‑May‑2023 | Prague CH | Clay | R32 | 149 | 318 | (6)Koepfer d. (Q)Gastao Elias [POR] | 1-1 RET | | 2.25 | 33.3% | 0.0% | 50.0% | 100.0% | 66.7% | 0/0 | 0:09 |
1‑May‑2023 | Prague CH | Clay | QF | 158 | 79 | (1)Filip Krajinovic [SRB] d. Koepfer | 6-1 6-2 | | 0.62 | 2.0% | 12.0% | 58.0% | 62.1% | 33.3% | 3/7 | 1:02 |
1‑May‑2023 | Prague CH | Clay | R16 | 158 | 134 | Koepfer d. Norbert Gombos [SVK] | 6-2 3-6 6-3 | | 1.13 | 3.7% | 7.4% | 63.0% | 78.4% | 36.7% | 3/5 | 1:52 |
1‑May‑2023 | Prague CH | Clay | R32 | 158 | 215 | Koepfer d. (Q)Federico Delbonis [ARG] | 6-1 6-4 | | 1.68 | 4.2% | 8.3% | 56.3% | 85.2% | 52.4% | 0/1 | 1:10 |
17‑Apr‑2023 | Tallahassee CH | Clay | R32 | 154 | 935 | (WC)Thai Son Kwiatkowski [USA] d. (3)Koepfer | 3-6 6-3 6-4 | | 1.04 | 8.4% | 2.4% | 73.5% | 70.5% | 50.0% | 4/7 | 1:58 |
3‑Apr‑2023 | San Luis Potosi CH | Clay | F | 179 | 184 | (3)Tomas Barrios Vera [CHI] d. Koepfer | 7-6(6) 7-5 | | 0.94 | 6.1% | 8.5% | 53.7% | 81.8% | 42.1% | 4/7 | 2:00 |
3‑Apr‑2023 | San Luis Potosi CH | Clay | SF | 179 | 194 | Koepfer d. Jan Choinski [GBR] | 6-3 6-3 | | 2.04 | 17.0% | 6.4% | 61.7% | 89.7% | 61.1% | 0/0 | 1:06 |
3‑Apr‑2023 | San Luis Potosi CH | Clay | QF | 179 | 206 | Koepfer d. Maximilian Neuchrist [AUT] | 4-6 6-1 6-4 | | 1.06 | 4.0% | 9.1% | 62.6% | 74.2% | 40.5% | 5/7 | 2:08 |
3‑Apr‑2023 | San Luis Potosi CH | Clay | R16 | 179 | 302 | Koepfer d. (Q)Denis Yevseyev [KAZ] | 6-3 6-2 | | 1.28 | 5.3% | 10.7% | 65.3% | 67.3% | 53.8% | 14/15 | 1:09 |
3‑Apr‑2023 | San Luis Potosi CH | Clay | R32 | 179 | 255 | Koepfer d. Roman Andres Burruchaga [ARG] | 6-1 6-3 | | 1.49 | 6.0% | 10.0% | 62.0% | 87.1% | 26.3% | 1/2 | 0:53 |
27‑Mar‑2023 | Mexico City CH | Clay | F | 262 | 234 | (Q)Koepfer d. (Alt)Thiago Agustin Tirante [ARG] | 2-6 6-4 6-2 | | 1.17 | 9.2% | 11.8% | 47.4% | 80.6% | 50.0% | 5/8 | 2:10 |
27‑Mar‑2023 | Mexico City CH | Clay | SF | 262 | 248 | (Q)Koepfer d. (Q)Maximilian Neuchrist [AUT] | 6-2 6-4 | | 2.21 | 8.9% | 4.4% | 57.8% | 84.6% | 68.4% | 2/3 | 1:11 |
27‑Mar‑2023 | Mexico City CH | Clay | QF | 262 | 304 | (Q)Koepfer d. (Q)Federico Gaio [ITA] | 6-4 4-6 7-6(5) | | 1.01 | 1.9% | 7.5% | 54.2% | 72.4% | 49.0% | 9/13 | 2:29 |
27‑Mar‑2023 | Mexico City CH | Clay | R16 | 262 | 183 | (Q)Koepfer d. Tomas Barrios Vera [CHI] | 4-6 6-4 7-5 | | 1.13 | 7.7% | 7.7% | 64.8% | 71.2% | 56.3% | 3/6 | 2:19 |
27‑Mar‑2023 | Mexico City CH | Clay | R32 | 262 | 205 | (Q)Koepfer d. Rio Noguchi [JPN] | 6-3 6-2 | | 1.41 | 11.0% | 9.6% | 57.5% | 71.4% | 51.6% | 6/7 | 1:19 |
27‑Mar‑2023 | Mexico City CH | Clay | Q2 | 262 | 402 | (2)Koepfer d. (Alt)Dmitry Popko [KAZ] | 6-3 6-1 | | 1.91 | 4.4% | 4.4% | 68.9% | 77.4% | 64.3% | 0/0 | 1:05 |
27‑Mar‑2023 | Mexico City CH | Clay | Q1 | 262 | 433 | (2)Koepfer d. Valerio Aboian [ARG] | 7-5 3-6 6-4 | | 1.11 | 5.6% | 11.1% | 52.2% | 74.5% | 48.8% | 6/10 | 2:13 |
6‑Mar‑2023 | Puerto Vallarta CH | Hard | R32 | 236 | 98 | (1)Daniel Altmaier [GER] d. Koepfer | 6-7(6) 7-6(4) 6-1 | | 0.88 | 1.1% | 2.2% | 66.7% | 69.4% | 41.9% | 3/7 | 2:33 |
27‑Feb‑2023 | Waco CH | Hard | R32 | 233 | 228 | Marco Trungelliti [ARG] d. Koepfer | 2-6 6-4 6-4 | | 0.98 | 2.9% | 3.9% | 67.0% | 66.7% | 47.1% | 9/12 | 2:10 |
20‑Feb‑2023 | Rome GA CH | Hard | R32 | 233 | 466 | (WC)Alex Michelsen [USA] d. (7)Koepfer | 6-3 6-1 | | 0.63 | 0.0% | 5.2% | 62.1% | 50.0% | 40.9% | 2/6 | 1:19 |