Lionel Messi scored twice to hit the 50-goal mark for the sixth time in his career on Sunday while Real Madrid put a fittingly poor ending to its worst season in recent memory after losing in the final round of the Spanish league.
Messi scored his 49th and 50th goals in all competitions this season to give Barcelona a 2-2 draw at Eibar and finished as the league's top scorer with 36 goals for the Spanish champions.
This is the sixth season Messi has finished as the top La Liga scorer, equaling a record held by Athlétic Bilbao striker Telmo Zarra from the 1950s.
Barcelona, which had clinched the league title with three rounds to play, will now look to also retain the Copa del Rey title next weekend when it faces Valencia. Its chance of a rare treble of major titles was ended by Liverpool in the Champions League semi-finals.
"It isn't that we don't want to [play better], we aren't able to," Zidane said. "The best thing is for this to be over. We are already thinking about the future and next season."
Madrid entered the match with nothing to play for, locked into a third-place finish for the second consecutive season for the first time since 1974.
Since the return of Zidane to take charge of the club after its shock loss to Ajax in the round of 16 in the Champions League, Madrid has finished the campaign with a record of five wins, two draws and four losses.
Marc Cucurella, a Barcelona youth player on loan to Eibar, opened the scoring before Messi got his first goal from a pass by Arturo Vidal in the 31st.
Messi added a second just a minute later when he broke behind Eibar's high defensive line, received the ball from Ivan Rakitic and chipped it over goalkeeper Marco Dmitrovic.
Eibar defender Pablo de Blasis leveled just before halftime when he scored from distance into an open net after Barcelona goalkeeper Jasper Cillessen made a poor clearance with his head outside the area.
Betis, which beat both Madrid and Barcelona at their stadiums, ended the season in 10th place.
"This allows us to finish a season that has been a bit disappointing with a victory against a team and at a stadium that will always be a nice memory," Setién said before the club announced his departure.
HOW IT ENDED
Champion Barcelona, Atlético, Madrid and fourth-place Valencia qualify for the Champions League. Getafe, Sevilla and Espanyol took the Europa League spots.