| 4‑Nov‑2024 | Metz | Hard | R32 | 44 | 107 | (8)Michelsen d. (WC)Harold Mayot [FRA] | 6-3 6-1 | | 1.33 | 10.3% | 2.9% | 69.1% | 74.5% | 42.9% | 9/9 | 1:16 |
| 28‑Oct‑2024 | Paris Masters | Hard | R64 | 44 | 14 | Michelsen d. (12)Hubert Hurkacz [POL] | 6-1 6-3 | (ch) | 2.41 | 12.2% | 2.4% | 68.3% | 85.7% | 61.5% | 0/0 | 0:51 |
| 25‑Sep‑2024 | Tokyo | Hard | R16 | 49 | 79 | (Q)Michelsen d. (Q)Christopher Oconnell [AUS] | 6-1 6-4 | | 1.58 | 6.5% | 3.2% | 77.4% | 72.9% | 64.3% | 3/3 | 1:19 |
| 25‑Sep‑2024 | Tokyo | Hard | R32 | 49 | 12 | (Q)Michelsen d. (4)Stefanos Tsitsipas [GRE] | 4-6 6-1 6-2 | (ch) | 1.52 | 12.7% | 0.0% | 64.8% | 69.6% | 68.0% | 1/3 | 1:48 |
| 26‑Aug‑2024 | US Open | Hard | R128 | 49 | 341 | Michelsen d. (Q)Eliot Spizzirri [USA] | 6-1 7-5 6-3 | | 1.52 | 5.1% | 7.6% | 54.4% | 69.8% | 52.8% | 3/7 | 1:58 |
| 19‑Aug‑2024 | Winston-Salem | Hard | R16 | 52 | 85 | (11)Michelsen d. Zizou Bergs [BEL] | 6-1 6-2 | | 1.56 | 3.8% | 3.8% | 69.8% | 75.7% | 50.0% | 3/3 | 1:16 |
| 12‑Aug‑2024 | Cincinnati Masters | Hard | R64 | 57 | 41 | (Q)Michelsen d. Tallon Griekspoor [NED] | 6-1 5-7 6-2 | | 1.93 | 13.7% | 1.4% | 65.8% | 87.5% | 60.0% | 2/3 | 1:46 |