Betis was led early by Andres Guardado, but Eibar equalized in the last minutes through Serge Enrique.
Betis raised his tally to 55 points and advanced to sixth place, clear of direct confrontations over Villarreal.
Betis needed to win any result to ensure his official participation in European competitions next season, a mission that will be postponed for the last two rounds.
On the other hand, Eibar raised his score to 30 points in the 20th place – last -, ahead of direct confrontations from Elche, before the last.
Eibar is now 3 points behind Huesca, 17th in the survival zone.
Eibar and Huesca are tied in direct confrontations, while Huesca excels by one goal in the overall goal difference, which would make the competition fiery and unprecedented if the two teams reached the last round with the same points.
Eibar continued his distinguished results in an attempt to escape the first drop in his history, as he scored 7 points in the last 3 rounds after 16 consecutive rounds without a victory before it.
Betis, for his part, completed 9 matches in a row without defeat, to move closer to returning to the European Championships.
But Betis’s knot at the Stade de Iborua connected with the Spanish Premier League, as he never won it, and was satisfied with 3 draws and 3 defeats.
The tactical clash was between two veteran coaches who are the biggest in La Liga this season: Manuel Pellegrini (67) and Jose Luis Mendelibar (60).
Betis opened the scoring very early, since the fourth minute, with captain Guardados shot, which hit Miguel Atienza and slammed into the net.
Guardado scored his first goal since January 2018 by another Mexican, Diego Laines.
Betis became the second most diversified team in the league this season, with 16 players, behind Barcelona, who scored 18 players.
In the second half, Ibar attacked strongly and did not throw the tissue, trying to avoid a landing he had not experienced before.
Eibar almost equalized with Jose Recios header in the 63rd minute, but Claudio Bravo miraculously blocked the goal.
Eibar came closer in the 82nd minute when Edo Exposito hit a powerful ball from inside the penalty area, just over the bar.
Even Eibar finally equalized in the 84th minute with Serge Enrique’s header after a neat cross from Roberto Correa.
So Eibar keeps a glimmer of hope for survival, and refuses to fall without raising his head.