Mallorca B

Marco Asensio spent 2013–14 in the Mallorca B shirt, and that was a title season: the reserves won Group XI of the Tercera División. Pablo Marí was there from 2010 to 2013, Miguel Ángel Nadal in 1986–87.

The team did not start out as a reserve side. It began in 1967 as an independent club, Unión Deportiva Collerense, and only became Mallorca's second team in 1981–82. It was Mallorca Atlético from 1983 and took its current name, RCD Mallorca B, in 1993. Before Collerense, the first team had used other affiliated clubs for the same purpose, Atlético de Palma and then CF Palma.

The 1995–96 Copa RFEF went to Palma, and in 1998–99 the side played in the Segunda División, the second tier. It finished 19th and went down. Since then the record has been one of repeated returns to the Tercera División summit. Group 11 was won in 2025–26 and promotion to the Segunda Federación for 2026–27.

Home is the Estadi Son Bibiloni, inside the Ciudad Deportiva Antonio Asensio training complex, with room for 1,500. The city rival is CD Atlético Baleares, and meetings between them count as part of the Palma derby. The colours are red and black, hence Rojinegros, and the club shares that name and the Els Barralets nickname with the first team.

Nine Tercera División titles, the first in 1984–85 and the latest in 2017–18.