La Liga's youngest centre-back pairing, Jon Martín and Mamadou Sarr, has become the defensive foundation for Real Sociedad. Their partnership, with just one loss in six starts, is a pillar of the team's strong form, which sees them sitting fifth with 19 points after 10 games, having recorded six wins, one draw, and three losses.

The 21-year-old academy product Jon Martín and 20-year-old Chelsea loanee Mamadou Sarr share duties at the heart of defence. They have started together six times, recording a perfect winning record in the league and a single defeat in their European debut against Bournemouth. The stats back their solidity: Sarr has not made a clear error leading to a shot or goal, while Martín averages 92% pass accuracy and 2.9 recoveries per game.

Individual performance

Each brings complementary qualities. Jon Martín, with homegrown experience, often acts as the last man. Mamadou Sarr provides a composure rare for his age, with 96% passing accuracy and an average of 4.2 ball recoveries. Manager Matarazzo has found a defensive formula. The coach has entrusted Martín with marking opposing forwards, while Sarr stands out for his quick decision-making.

Test passed against Levante

The latest test was passed with flying colours at Anoeta, where Real Sociedad beat Levante 2-1 on Sunday 25 October. Goals from Orri Steinn Óskarsson and Benat Turrientes secured the win, which extended their league winning streak to three. The young duo had to deal with a mobile visiting attack. "He has Champions League-level players," Luis Castro recently stated, praise that fits the evolution of these two youngsters. This result is part of a run of four wins and a draw in the last five matches, including a commanding 0-6 win over Lillestrom.

With eyes on the next challenge, the derby against Athletic Club at San Mamés on Sunday 1 November, the pair faces its most high-profile test. The Bilbao side, eighth in the table, presents an attack with players like Maroan that will demand the utmost from the Donostiarra defence. The current good form comes at the ideal time. The team has scored 19 goals in ten matchdays, though they have also conceded 18, and is only eight points off the top.

The progression of Jon Martín and Mamadou Sarr is now a reality at Anoeta. The best is probably yet to come. Their next act is at the cathedral, where they will look to cement a run that has Real Sociedad dreaming big.

The report in full is at noticiasdegipuzkoa.eus