Atlético Madrid B [SEP] league
Aviaco Madrileño CF", which was established in 1967 when "Madrileño CF" (1956–67) and "AD Aviaco" merged, became affiliated with Atlético Madrid and changed its name to "Atlético Madrileño Club de Fútbol".
In 1991, the club changed the name to Atlético Madrid B for the 1991-92 season. Having already played from 1980–86 in Segunda División, the reserves fluctuated between that level and Segunda División B – created in 1977 as the new third division – in the following decades. In
the last 12 minutes of a 0–3 away loss against Atlético Madrid.
Football career Almería / Atlético Madrid.
On 8 July 2013, Sáiz signed with UD Almería B. In January of the following year he moved teams again, joining Atlético Madrid B also in the third division.
Occasionally called for training with Atlético's main squad under manager Diego Simeone, Sáiz was also an unused substitute in a league match against Villarreal CF.
Football career Huesca.
On 5 August 2015, Sáiz joined SD Huesca from Segunda División in