Athletic Bilbao scored twice in the final minutes to earn a 2-2 draw that dealt a serious blow to Levante's hopes of avoiding relegation from the Spanish league on Sunday.
Sevilla beat Real Betis 2-0 in the Seville derby for its first win in six rounds to warm up for the opening leg of its Europa League semifinal against Shakhtar Donetsk on Thursday.
Levante was set to provisionally escape last place after going ahead 2-0 with a goal by Victor Casadesus and an own goal by Xabier Etxeita.
But Inaki Williams set up strikes for Markel Susaeta in the 88th and Mikel San Jose in stoppage time to ensure the hosts stayed bottom with only three matches left.
"It's impossible to explain," Levante forward Jose Morales said. "Eighty-eight minutes working to earn three points that would have kept us in the fight, and I just don't know what to say now."
Bilbao remained in fifth place -- a Europa League spot.
Sevilla striker Kevin Gameiro headed in his 16th league goal of the season in the 67th before substitute Jorge "Coke" Andujar finished off Betis in the 80th.
Villarreal, Liverpool's opponent in the other Europa League semifinal on Thursday, hosts Real Sociedad in the late match. Valencia visits Getafe in an earlier kickoff.
