If their record unbeaten streak was to be ended anywhere, it would have been on their tricky away trip to title-chasing Cartagena on Sunday.
Marbella tasted defeat for the first time in 17 games, suffering a 2-0 reversal courtesy of a goal in each half from forward Eretxe.
The first came after 20 minutes as a result of some good play from the hosts but this didn't perturb Marbella who continued to hold a high line and keep the play in Cartagena's half. That said, David Cubillo's side were unable to create any real danger in and around their hosts' area.
Cartagena stepped up a gear after the break and were rewarded just four minutes later when a corner from the left was nodded in via Eretxe's thigh to leave Wilfred rooted to the spot in the Marbella goal.
The visitors' cause was dealt another blow five minutes later when forward Juanma received a straight red card for a challenge on Josua Mejías, yet it was teammate Elías who came closest to getting the game's next goal; his shot, however, was well saved by Joao Costa.
Defeat for Marbella, their first since 7 January (Jumilla 0-3), leaves them in eighth place, three points off seventh and qualification for next year's Copa del Rey.