Under Garitano, who has also coached Eibar, Valladolid, Deportivo La Coruna and Athletic Bilbao's reserve side, they have won nine out of 16 games and lost only twice, climbing to eighth in the standings on 43 points.
Bilbao are four points behind fourth-placed Getafe, who they visit on Sunday in a game that could make or break their chances of returning to the Champions League for the first time since 2014.
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(Reporting by Richard Martin; Editing by David Goodman)
