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Oso Heads to Strasbourg: Sevilla Defender Completes Ligue 1 Switch
Joaquín Martínez Gauna, known as Oso, sealed a transfer from Sevilla to Strasbourg on 29 August 2026, adding defensive depth to the Alsace side.
Joaquín Martínez Gauna — the Sevilla defender who goes by the nickname Oso — has completed a transfer to French side Strasbourg, with the move confirmed on 29 August 2026. The 22-year-old Spaniard arrives at the Stade de la Meinau seeking regular minutes after a season spent largely on the fringes at the Ramón Sánchez Pizjuán.
At a glance
- 22-year-old Spanish defender, 183 cm tall
- Moves from Sevilla to Strasbourg (29 Aug 2026)
- Made 24 apps (1,595 min) in La Liga & Copa del Rey last season
Career context
Oso’s only recorded senior transfer to date is the switch from Sevilla to Strasbourg on 29 August 2026. There is no prior club history listed in the available records, meaning this move represents his first permanent transfer between clubs. The player was born in Torrevieja, Spain, and holds Spanish nationality.
How he fits at his new club
Listed as a Defender, Oso brings a profile built around duels and ball progression. His API-Football attributes show a 90 in duels, 88 in technique, and 65 in creation, suggesting he can operate effectively as a ball-playing centre-back or a wide defender comfortable stepping into midfield areas. His pass accuracy of 76 and 532 total passes over the campaign indicate composure under pressure, which should suit Strasbourg’s need for a defender capable of building from the back.
Recent numbers
Apps
Goals
Assists
Minutes
Rating
During the 2025 season, Oso made 24 appearances across La Liga and the Copa del Rey, accumulating 1,595 minutes of playing time. He scored 2 goals and provided 3 assists, contributing to both ends of the pitch. His duels won stood at 89 out of 170 (52%), with 32 tackles and 12 interceptions recorded. In La Liga alone — 21 apps, 1,409 minutes — he posted a 6.8 rating, won 75 of 144 duels, and completed 21 key passes.
In his most recent outings for Sevilla during the 2026 La Liga season, Oso delivered strong individual showings:
- On 22 August 2026, he earned an 8.2 rating in a 3-1 win over Athletic Club, winning 8 of 15 duels, contributing 1 goal and 1 assist, and completing 17 passes.
- On 15 August 2026, he played the full 78 minutes in a 2-1 victory against Rayo Vallecano, registering a 6.5 rating with 4 of 8 duels won.
Key takeaways
| Metric | 2025 Season | Recent Match (vs Athletic) |
|---|---|---|
| Appearances | 24 | 1 (78 min) |
| Duels Won | 89/170 (52%) | 8/15 |
| Rating | 6.78 | 8.2 |
| Goals | 2 | 1 |
| Assists | 3 | 1 |
- Duels machine: Averaging nearly seven duels per appearance, Oso is aggressive and effective in one-on-one situations.
- Creative defender: With 27 key passes and 3 assists last season, he offers genuine outlet ability from the back.
- Late bloomer: Spending much of his time on the Sevilla bench (19 subs), he’ll be eager to break into Strasbourg’s starting XI.
- Strong finisher: His standout 8.2-rated performance against Athletic Club signals he can deliver when called upon.
Oso’s move to Strasbourg gives the Ligue 1 club a technically sound, physically imposing defender who thrives in duels and contributes to build-up play. At 22, he still has room to grow, and his recent form suggests he’s ready to step into a regular starting role.