| Nantes Int. | 06/18 08:40 | - | Jason Christ Alexander v Arnaud Merkle | W | 0-2 | |
| Nantes Int. | 06/17 14:40 | - | Arnaud Merkle v Sameer Verma | W | 2-0 | |
| Nantes Int. | 06/17 07:40 | - | Arnaud Merkle v Mark Caljouw | W | 2-0 | |
| Nantes Int. | 06/16 11:00 | - | Arnaud Merkle v Alwi Farhan | W | 2-0 | |
| Nantes Int. | 06/16 09:00 | - | Sacha Leveque v Arnaud Merkle | W | 0-2 | |
| Denmark Masters | 06/10 08:40 | - | Mark Caljouw v Arnaud Merkle | L | 2-0 | |
| Denmark Masters | 06/09 12:40 | - | Arnaud Merkle v Tobias Kuenzi | W | 2-0 | |
| Denmark Masters | 06/09 09:50 | - | Victor Svendsen v Arnaud Merkle | W | 0-2 | |
| Slovenia Open | 05/19 13:40 | - | Arnaud Merkle v Kalle Koljonen | L | 0-2 | |
| Spain Masters | 03/30 08:30 | 4 | Kenta Nishimoto v Arnaud Merkle | - | Walkover | |
| Spain Masters | 03/29 08:30 | 5 | Arnaud Merkle v Brice Leverdez | W | 2-0 | |
| Welsh Int. | 12/02 17:40 | - | Victor Svendsen v Arnaud Merkle | - | home | |
| Welsh Int. | 12/02 11:00 | - | Joran Kweekel v Arnaud Merkle | W | 1-2 | |
| Hylo Open | 11/03 16:20 | 4 | Srikanth Kidambi v Arnaud Merkle | L | 2-1 | |
| Hylo Open | 11/02 11:50 | 5 | Kantaphon Wangcharoen v Arnaud Merkle | W | 0-2 | |
| Dutch Open | 10/15 14:00 | - | Arnaud Merkle v Mads Christophersen | L | 0-2 | |
| Dutch Open | 10/15 08:40 | - | Magnus Johannesen v Arnaud Merkle | W | 1-2 | |
| Dutch Open | 10/14 12:40 | - | Arnaud Merkle v Felix Burestedt | W | 2-1 | |
| Dutch Open | 10/13 09:00 | - | Arnaud Merkle v Kalle Koljonen | W | 2-1 | |
| Canada Open | 10/01 19:20 | 2 | Arnaud Merkle v Alex Lanier | L | 1-2 | |
| Canada Open | 09/30 19:40 | 3 | Jason Anthony Ho-Shue v Arnaud Merkle | W | 1-2 | |
| Canada Open | 09/29 19:40 | 4 | Jacob Nilsson v Arnaud Merkle | W | 0-2 | |
| Canada Open | 09/28 20:20 | 5 | Amit Kshatriya v Arnaud Merkle | W | 0-2 | |
| Belgian Int. | 09/16 08:40 | - | Li Yang Su v Arnaud Merkle | W | 1-2 | |
| Belgian Int. | 09/15 15:20 | - | Koo Takahashi v Arnaud Merkle | W | 1-2 | |
| Belgian Int. | 09/15 09:10 | - | Po-Wei Wang v Arnaud Merkle | W | 0-2 | |
| Malaysia Masters - Kval | 07/05 02:20 | - | Arnaud Merkle v Victor Svendsen | L | 0-2 | |
| Nantes Int. | 06/24 09:00 | - | Syabda Perkasa Belawa v Arnaud Merkle | L | 2-0 | |
| Thomas Cup | 05/11 12:20 | - | Arnaud Merkle v Adel Hamek | W | 2-0 | |
| Thomas Cup | 05/10 08:00 | - | Rasmus Gemke v Arnaud Merkle | L | 2-0 |
Arnaud-Sylvain-André Merklé (born 25 April 2000) is a French badminton player from Staffelfelden. He was the boys singles European Junior Champion in 2018, and also part of the national junior team that clinched the mixed team title in 2017 and 2018. He participated at the 2018 Summer Youth Olympics in Buenos Aires, Argentina, and reached the boys' singles bronze medal match losing to Kodai Naraoka of Japan in the rubber game.
In 2022, Merklé reached his first BWF World Tour final at the Syed Modi International. The final match between Merklé and his compatriot Lucas Claerbout was called off after Merklé tested positive for COVID-19. Both players were later awarded as runner-up with 5.950 ranking point.