Athletic Bilbao B
Bilbao Athletic, officially named Athletic Club "B", is the reserve team of Athletic Bilbao, a football club based in Bilbao, in the autonomous community of Basque Country. The team will play in the Segunda División B in the 2018–19 season. Founded in 1964, the team holds home matches at the small stadium attached to the club's training facility at Lezama, or occasionally at San Mamés Stadium, with its 53,500-seat capacity, for important fixtures.
Daniel Astrain
Born in Pamplona, Navarre, Astrain joined Athletic Bilbao in 1969, from local CD Oberena. He spent nearly three full seasons with the reserves, making his first competitive appearance with the first team on 16 January 1972 by playing the full 90 minutes in a 2–1 away win against RCD Español.