Athletic Bilbao vs Osasuna: GoalBible Expert Predictions, Stats, Free Betting Tips & Odds

La Liga Matchday 33 brings one of the Basque Country’s most compelling midseason rivalries to the iconic San Mamés stadium in Bilbao. On Tuesday, 21 April 2026, Athletic Club host Osasuna at 19:00 CEST in what promises to be a tightly-contested fixture between two sides with contrasting recent fortunes. The Leones will be keen to push on after a home win against Villarreal, while the visitors from Pamplona arrive having seen inconsistent league form in recent weeks.

From my betting view at GoalBible, this fixture carries plenty of weight. Athletic Bilbao hold the clear home advantage — San Mamés is one of the most intimidating arenas in La Liga, and the Leones have historically been tough to break down at their fortress. With both squads navigating injury concerns and a tight mid-table-to-European-fringe battle, the quality of each tactical approach will be decisive.

Kicking off at 19:00 CEST on Tuesday 21 April, this Matchday 33 clash is a great opportunity for punters. After studying the form, head-to-head record, and team news, I’m backing Athletic Bilbao to take all three points in a low-scoring affair. Let me walk you through my full analysis below.

Athletic Bilbao vs Osasuna Free Betting Tips & Our Prediction:

The data consistently points toward Athletic Bilbao’s home dominance and the match producing under 2.5 goals. Both teams have shown defensive solidity in recent outings, and the H2H history shows this rivalry rarely turns into a goal-fest. Here are my two standout picks for this fixture.

👉 Read our BC Game Review before you place your next bet.

Match Result

Athletic Bilbao @ 1.75 

Draw @ 3.40

Osasuna @ 4.75

Anytime Goalscorer

Gorka Guruzeta @ 2.50

Nico Williams @ 2.75

Ante Budimir @ 3.20

Both Teams To Score

Yes @ 1.90

No @ 1.87

Over/Under

Over 2.5 Goals @ 2.10 

Under 2.5 Goals @ 1.72

Over 1.5 Goals @ 1.40

Under 1.5 Goals @ 2.80

Player To Be Carded

Jon Moncayola @ 2.80

Inigo Ruiz de Galarreta @ 3.00

Lucas Torro @ 3.10

Team Form: Athletic Bilbao vs Osasuna

From my point of view at GoalBible, Athletic Bilbao have been one of the more reliable home sides in La Liga this season. The Leones — managed by the tactically astute Ernesto Valverde — currently sit in the top half of the table and showed significant character with a hard-fought 2-1 home win over Villarreal on April 12. Prior to that, a frustrating 2-0 defeat to Getafe on April 5 reminded everyone this squad is not without vulnerability on the road or in off-days at home. Key players like Nico Williams and Gorka Guruzeta remain central to their attacking threat, with Guruzeta consistently among the side’s top scorers. Defensively, the Leones have conceded fewer than two per game at San Mamés this season. Their recent home record gives me real confidence in backing them here.

Looking at Osasuna, they arrive at San Mamés in a tricky spell of form. Los Rojillos recorded just one win in their last five La Liga outings, with results including a 2-2 draw at Deportivo Alavés on April 5 and a 1-1 draw against Real Betis on April 12. The Navarran side can be hard to beat, especially when Ante Budimir leads the line with his physicality, and midfield operators like Jon Moncayola and Lucas Torro provide energy. However, Osasuna have struggled to find wins on the road this season, and making the trip to Bilbao is one of the toughest assignments in Spanish football. Their defensive fragility on transitions is something Athletic’s wide attackers — particularly Nico Williams — will look to exploit.

Athletic Bilbao Team News

• Available: Unai Simón (GK), Andoni Gorosabel, Daniel Vivian, Aitor Paredes, Adama Boiro, Inigo Ruiz de Galarreta, Mikel Jauregizar, Inaki Williams, Oihan Sancet, Nico Williams, Gorka Guruzeta

• Out: Yeray Álvarez (suspension), Yuri Berchiche (injury), Benat Prados (injury), Maroan Sannadi (injury)

• Doubtful: Aymeric Laporte (injury — fitness being assessed), Unai Eguiluz (injury)

Osasuna Team News

• Available: Sergio Herrera (GK), Valentin Rosier, Alejandro Catena, Jorge Herrando, Javi Galán, Jon Moncayola, Lucas Torro, Rubén García, Aimar Oroz, Víctor Muñoz, Ante Budimir

• Out: Iker Benito (injury), Abel Bretones (suspension)

• Doubtful: Flavien Boyomo (international duty/availability being confirmed)

Season Performance & Standings

From what I’m seeing in the La Liga table, Athletic Bilbao hold a clear positional advantage over their Basque neighbours this season. The Leones sit comfortably in the top half, a reflection of their consistent home form and the goals provided by Williams and Guruzeta up front. Osasuna, by contrast, have found life in mid-table difficult — their 30-match record shows more losses than wins, and a positive goal difference has eluded them for most of the campaign. This gap in league standing supports the case for an Athletic home win.

Head-to-Head: Last 5 Meetings

Athletic Bilbao hold the upper hand in this H2H rivalry. In their last 31 meetings overall, Bilbao have won 16 times against Osasuna’s 7, with 8 draws. Importantly, Athletic haven’t lost in 8 of their last 10 encounters with Osasuna. However, this is no walkover — Osasuna upset the apple cart in January 2025, and the rivalry always produces competitive football. The average of 2.32 goals per game across recent meetings supports the Under 2.5 Goals angle strongly.

GoalBible Conclusion

This is a match where home advantage, current form, and the H2H record all point in the same direction: Athletic Bilbao. San Mamés provides an extraordinary atmosphere that lifts the Leones, and with Osasuna arriving in poor away form and missing a key midfielder through suspension, Valverde’s side have every reason to be confident. Nico Williams’s pace and directness will cause Osasuna’s defence real problems, and with Guruzeta sharp in front of goal, I fully expect Athletic to edge this one.

My top pick is: Athletic Bilbao Win @ 1.75 at BC Game. The H2H dominance at home, current form differential, and Osasuna’s poor recent run away from Pamplona all stack up in Bilbao’s favour. At odds of 1.75 this represents solid value given the weight of evidence — I would not be looking to complicate this one.

For punters looking beyond match odds, the Under 2.5 Goals @ 1.72 is an excellent secondary angle. The recent H2H average of 2.32 goals per game, combined with both teams’ defensive solidity and the absence of key forward options for Osasuna, makes this a logical play. At GoalBible, we always follow what the data shows, and here the data is pointing consistently toward a tight, controlled result. Back Athletic Bilbao to win at BC Game and enjoy the football.