Júnior Alonso Profile, Stats and Career

Copa Libertadores winner, left-footed centre-back across Lille, Boca Juniors, Krasnodar and Atlético Mineiro — Júnior Alonso is one of Paraguay's most experienced defenders at the 2026 World Cup.

Country Paraguay
Club Atlético Mineiro
Position Centre-Back
Age 33
Player Profile Stats Career

Júnior Alonso is a 33-year-old Paraguayan centre-back playing for Atlético Mineiro in the Campeonato Brasileiro Série A. The left-footed number 6 has competed at the highest level of South American and European football across a career spanning Cerro Porteño, Lille, Celta Vigo, Boca Juniors, Krasnodar, and Atlético Mineiro. This profile covers his age, career path, club statistics, and international record with Paraguay.

Born in Asunción, Alonso developed at Cerro Porteño before Lille signed him for the Ligue 1 in 2017. Loan spells at Celta Vigo and Boca Juniors followed before Atlético Mineiro — the club where he has spent the bulk of his senior career — became his professional home. He won the Copa Libertadores, Série A, and Copa do Brasil with Atlético in 2021, and the Campeonato Mineiro multiple times. He has 70+ caps for Paraguay.

Quick Answer

Júnior Osmar Ignacio Alonso Mujica is a Paraguayan professional centre-back born on 9 February 1993 in Asunción, Paraguay. He plays for Atlético Mineiro in the Brazilian Série A and has 70+ caps for Paraguay. Alonso won the Copa Libertadores in 2021 with Atlético Mineiro and has represented Paraguay at Copa América 2015, 2019, 2021, and 2024.

Early Life and Background

Júnior Alonso was born on 9 February 1993 in Asunción, Paraguay. He developed through Cerro Porteño's youth academy — one of the two most prestigious clubs in Paraguay — before making his senior debut for the first team in 2013. He represented Paraguay at the 2013 South American U-20 Championship before earning his first senior cap that same year.

Cerro Porteño gave him his first professional platform, where he won Paraguayan Primera División titles in 2013 Clausura and 2015 Apertura and developed the physical and tactical qualities that would earn him a Ligue 1 move. Lille signed him in 2017, beginning his European chapter.

Lille, Boca Juniors, Krasnodar, and Atlético Mineiro

Lille signed Alonso in 2017 from Cerro Porteño for a transfer reported in the range of €4–5 million. He spent three seasons at the club, including a loan to Celta Vigo in La Liga (2018), before a loan move to Boca Juniors gave him Argentine Primera División and Copa Libertadores experience. He won the Superliga Argentina and Super Copa Internacional with Boca in 2018–19 and 2019–20.

Atlético Mineiro took him on loan in 2020 and then brought him back permanently from Krasnodar in July 2024, with whom he had spent 2022–2024 in the Russian Premier League after a further loan at Atlético in 2022. The 2021 season at Atlético Mineiro remains the high point of his club career — winning the Copa Libertadores, Série A, Copa do Brasil, and Campeonato Mineiro in a historic year.

Júnior Alonso Personal Info and Profile

Full nameJúnior Osmar Ignacio Alonso Mujica
Date of birth9 February 1993
Age33
Place of birthAsunción, Paraguay
NationalityParaguay
Height6 ft 1 in / 1.85 m
Weight~183 lbs / 83 kg
PositionCentre-Back / Left-Back
Preferred footLeft
Current clubAtlético Mineiro
Jersey number6

Alonso is left-footed — a trait that has made him tactically valuable in central defensive partnerships where natural balance across both channels is prioritised. His 70+ caps for Paraguay represent one of the largest international records in the 2026 World Cup squad, behind only Gustavo Gómez and Gatito Fernández.

Transfer News and Market Value

Júnior Alonso rejoined Atlético Mineiro permanently in July 2024 from Krasnodar on a contract through December 2026. His market value is estimated at approximately €1.4 million, reflecting his age and the domestic Série A market.

His most financially significant transfers were the Lille move in 2017 and the Krasnodar permanent deal in 2022. Russian clubs offered competitive wages during the pre-sanction era, and Krasnodar's investment in quality South American players meant Alonso likely received a salary uplift during his two Russian seasons.

At Atlético Mineiro in 2025–26, his league rating of 6.83 (FotMob) and consistent starts reflect his continued reliability at Série A level despite his age. His contract expires in December 2026, making him a free agent after the World Cup, which may attract MLS or other South American interest.

His World Cup season will be closely watched by potential suitors. A consistent tournament performance could extend his career in a new market, while remaining at Atlético Mineiro on improved terms is also plausible given the club's relationship with him.

Salary and Net Worth

Júnior Alonso's salary at Atlético Mineiro is estimated between $80,000 and $120,000 per month, consistent with an experienced starter at one of Brazil's major clubs. Atlético Mineiro's Copa Libertadores profile and domestic dominance allow them to attract and retain quality senior players.

His Lille salary (2017–2020) was likely in the range of €50,000–80,000 per month given Ligue 1 wages for a defensive international. The Boca Juniors loan years were compensated at Argentine rates with performance bonuses.

Krasnodar (2022–2024) paid competitive Russian Premier League wages, estimated at approximately €100,000–150,000 per month. The financial uncertainty following international sanctions created challenges for foreign players in Russia during that period.

Total estimated career earnings across Paraguay, France, Spain, Argentina, Russia, and Brazil are approximately $12–16 million USD, placing Alonso among Paraguay's better-compensated international footballers.

His Copa Libertadores winner's bonus with Atlético Mineiro in 2021 — distributed as part of the South American club football prize pool — was a significant additional income in that peak season.

As a World Cup participant with 70+ caps, Alonso will receive a substantial share of Paraguay's FIFA pool distribution. Estimated net worth is approximately $7–9 million USD.

No significant commercial endorsements have been publicly reported. His off-field profile is consistent with a professional defender whose attention has been focused on the clubs and competitions he has competed in rather than commercial opportunities.

Júnior Alonso Club Career

Alonso began his professional career at Cerro Porteño in 2013, winning back-to-back Paraguayan Primera División titles before Lille signed him in 2017. At Cerro Porteño he also won the Algarve Football Cup with Lille (2018) in a pre-season competition.

Lille provided him with Ligue 1 experience across three seasons (2017–2020), including a loan to Celta Vigo in La Liga that exposed him to Spanish top-flight football. A loan to Boca Juniors in 2019–20 was arguably his most high-profile spell outside Brazil — Boca won the Superliga Argentina (2019–20) with him in the squad.

Atlético Mineiro's 2021 season was one of the greatest in the club's history and one of the best in Alonso's career. He was part of the squad that won the Copa Libertadores, Campeonato Brasileiro Série A, Copa do Brasil, and Campeonato Mineiro — a historic quadruple for the Belo Horizonte club.

His return to Atlético Mineiro permanently in July 2024 after the Krasnodar experience brought him back to the club and country where he has been most productive. In 2025–26, he has made consistent contributions in the Série A and Copa Libertadores, maintaining the standards that earned him a place in Paraguay's 2026 World Cup squad.

Club Career Stats

PeriodClubAppsGoals
2013–2017Cerro Porteño120+5
2017–2020Lille (+ Celta loan)80+2
2019–2020Boca Juniors (loan)40+1
2020–presentAtlético Mineiro (+ Krasnodar)180+5

2021 Season (Atlético Mineiro) — historic year

CompetitionResult
Copa LibertadoresWinner
Campeonato Brasileiro Série AWinner
Copa do BrasilWinner
Campeonato MineiroWinner

International Career

Júnior Alonso made his senior Paraguay debut in 2013 and has earned 70+ caps across four Copa América tournaments and multiple World Cup qualifying cycles. He scored 3 international goals and was a regular starter in qualifying cycles for 2018, 2022, and 2026.

His Copa América record includes the 2015, 2019, 2021, and 2024 tournaments — one of the longest Copa América careers of any current Paraguayan player. His experience and leadership in the national team setup complement the captaincy of Gustavo Gómez.

The 2026 World Cup is the first FIFA senior World Cup of Alonso's career — a tournament he has targeted through four consecutive qualifying cycles. At 33, it represents the culmination of an international career built on consistency, physicality, and tactical intelligence across multiple defensive systems.

National teamCapsGoalsTournament involvement
Paraguay70+3Copa América 2015, 2019, 2021, 2024; WC Qualifying 2018, 2022, 2026; 2026 FIFA World Cup

Honours and Trophies

TrophyTimes WonYears
Copa Libertadores12021 (Atlético Mineiro)
Campeonato Brasileiro Série A12021 (Atlético Mineiro)
Copa do Brasil12021 (Atlético Mineiro)
Campeonato Mineiro42020, 2021, 2022, 2025
Liga Profesional Argentina12019–20 (Boca Juniors)
Paraguayan Primera División22013 Clausura, 2015 Apertura (Cerro Porteño)

Playing Style and Key Strengths

Júnior Alonso is a left-footed centre-back who combines physicality, aerial authority, and composure in defensive transitions. His game is built on positioning and timing rather than raw pace — qualities that have allowed him to compete at the top level of South American and European football into his thirties.

His strongest attributes are aerial duels, one-on-one defending, and covering across the defensive line when his partner is drawn out. At Atlético Mineiro, he has played in defensive systems requiring both tight man-marking and zonal defending, giving him tactical versatility that suits Paraguay's back-four structure.

Copa Libertadores winner's defensive profile

Winning the Copa Libertadores in 2021 — competing against South America's elite attacking players in knockout matches — is the benchmark for Alonso's defensive career. The experience of facing pressure, transitions, and set-piece threats in those high-stakes matches has sharpened his ability to perform under exactly the kind of pressure that World Cup group stage football demands.

Frequently Asked Questions

Júnior Alonso is 33 years old, born on 9 February 1993 in Asunción, Paraguay. He plays for Atlético Mineiro and has over 70 caps for the Paraguay national team.

Yes. Júnior Alonso won the Copa Libertadores in 2021 with Atlético Mineiro as part of a historic season that also included the Campeonato Brasileiro Série A, Copa do Brasil, and Campeonato Mineiro.

Júnior Alonso has played for Cerro Porteño, Lille (Ligue 1), Celta Vigo (La Liga, loan), Boca Juniors (loan), Atlético Mineiro, and Krasnodar across his career, giving him experience across South America, France, Spain, and Russia.

Júnior Alonso has over 70 caps for Paraguay since his debut in 2013, making him one of the most capped defenders in the 2026 World Cup squad. He has played in Copa América 2015, 2019, 2021, and 2024.

Yes. Júnior Alonso is left-footed, which gives Paraguay's central defensive partnership natural balance alongside right-footed captain Gustavo Gómez. This tactical asset has been central to his long-term inclusion in the national team.

Conclusion

Júnior Alonso's career has been defined by the kind of sustained excellence that earns respect rather than headlines — consistent performances across six different clubs in four countries, a Copa Libertadores winner's medal, and over 70 appearances for his national team across more than a decade of international football.

The 2026 World Cup gives him the platform to represent Paraguay at football's ultimate stage after four qualifying campaigns. His experience, left-foot balance, and Copa Libertadores credentials make him one of Paraguay's most complete defensive options as La Albirroja face the United States, Australia, and Türkiye in Group D.