| 100100 | Mertens - Higuita | 1-0 | 15th of May 2018 11:23:39 | (chess) | rated |
| 100101 | Gresham - Mertens | 0-1 | 22nd of December 2017 20:59:54 | (chess) | rated |
| 100102 | Mertens - Vollmer | 1/2-1/2 | 12th of December 2017 09:56:28 | (chess) | rated |
| 100103 | Trigance - Mertens | 0-1 | 26th of November 2017 07:01:55 | (chess) | rated |
| 100104 | Mertens - Zemlyanov | 1-0 | 18th of December 2017 20:32:32 | (chess) | rated |
| 100105 | Trokenheim - Mertens | 1/2-1/2 | 4th of January 2018 12:27:21 | (chess) | rated |
| 100244 | Dyson - Mertens | 1-0 | 2nd of May 2018 10:49:02 | (chess) | rated |
| 100249 | Mertens - Hayward | 1-0 | 7th of May 2018 10:42:41 | (chess) | rated |
| 100253 | Gresham - Mertens | 0-1 | 27th of December 2017 09:25:00 | (chess) | rated |
| 100256 | Mertens - Hilbert | 1-0 | 4th of June 2018 13:02:53 | (chess) | rated |
| 100258 | Sternik - Mertens | 1-0 | 15th of February 2018 10:45:01 | (chess) | rated |
| 100260 | Mertens - Duttagupta | 1/2-1/2 | 30th of May 2018 09:45:03 | (chess) | rated |
| 104009 | Fric - Mertens | 1-0 | 24th of April 2018 10:35:54 | (chess) | rated |
| 104016 | Mertens - Cease | 0-1 | 8th of July 2018 06:36:17 | (chess) | rated |
| 104022 | Farnik - Mertens | 1-0 | 9th of April 2018 17:14:34 | (chess) | rated |
| 104028 | Mertens - Cesbron | 1/2-1/2 | 11th of June 2018 13:09:19 | (chess) | rated |
| 104029 | Matisz - Mertens | 1-0 | 30th of June 2018 16:17:51 | (chess) | rated |
| 104030 | Mertens - Piantadosi | 1-0 | 8th of May 2018 01:31:56 | (chess) | rated |
| 104031 | Tkac - Mertens | 0-1 | 20th of April 2018 10:44:23 | (chess) | rated |
| 104032 | Mertens - Rivenburg | 1-0 | 25th of April 2018 09:54:13 | (chess) | rated |
| 105205 | Mertens - Romig | 0-1 | 31st of May 2018 10:05:31 | (chess) | unrated |
| 105210 | Sharma - Mertens | 0-1 | 19th of June 2018 18:42:30 | (chess) | unrated |
| 105215 | Mertens - Liwat | 0-1 | 23rd of September 2018 15:12:18 | (chess) | unrated |
| 105216 | Foster - Mertens | 1-0 | 11th of September 2018 12:19:10 | (chess) | unrated |
| 105217 | Mertens - Biryukov | 1-0 | 6th of June 2018 01:05:14 | (chess) | unrated |
| 105218 | Sternik - Mertens | 1-0 | 30th of August 2018 23:19:36 | (chess) | unrated |