He is on the books of RWDM Brussels and wears shirt number 83. His main role on the pitch is Defender. His stronger foot is Right. His estimated market valuation currently stands at 500K €.

His latest transfer saw him join RWDM Brussels from Lecce via on 2025-06-30.

Across the Belgian Cup 2025-2026, Mats Lemmens appeared in 2 matches and averaged 0 tackles, 0 interceptions, 0 clearances, and 0 blocked shots per game.