Ghana midfielder Mubarak Wakaso played his first league game for new club Alaves on Friday.
His much anticipated debut ended in disappointment as they were defeated 1-0 by Leganes.
Wakaso, who joined the club at the start of the season, played the entire duration of the game and could not save his side from defeat.
Brazilian striker Gabriel scored the only goal of the game after 24 minutes for a Leganes side who narrowly avoided relegation last season.
The 23-year-old was alert to the opportunity which presented itself when Alaves goalkeeper Fernando Pacheco managed to only parry a deflected free-kick from Miguel Angel Guerrero into his path.