He currently plays for FK Kolin, wearing the number 12 shirt. He plays primarily as a Defender. His current market value is estimated at 75K €.

His most recent move was a Free from Vysocina Jihlava to SK Benatky nad Jizerou on 2026-02-12.

Throughout the Czech Third League 2025-2026, martin sladek featured in 16 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.