Xiker

On 31 January 2020, Xiker rescinded his contract with Betis in order to sign a new deal with Sabadell.

On 28 January 2019, Xiker signed for Cornellà after his contract with Real Sociedad was terminated by agreement. He made his debut for the club on 2 February in a 1–0 loss to Badalona. In his debut season, he made 14 appearances as Cornellà reached the final of the Copa Federación, where they were defeated 5–2 on aggregate by Mirandés, and the promotion playoffs.

In June 2018, following a collaborative agreement between Peña Sport and Real Sociedad, Xiker joined the latter on a two-year deal where he linked up with the Real Sociedad B side. He made his debut on 9 September, starting in a 2–0 defeat to Barakaldo. He struggled for game time thereafter, however, and made just three appearances before leaving the club in January in seek of first-team opportunities.

Having been restricted to just seven appearances as a result of his injury, Xiker rescinded his contract with Toledo and signed for newly-promoted Segunda División B side Peña Sport on 16 July 2017. He made his debut for the club on 20 August, starting in a 1–0 defeat to Real Unión. Ten days later, he featured in the Copa del Rey for the first time, though Peña were unable to hold onto the lead in a 2–1 defeat to Mirandés. He scored his first professional goal on 14 January 2018, netting Peña's third in a 3–3 draw with Arenas Club. In doing so, he helped the club to their eighth consecutive match without defeat, having previously not won in their first 13. The club's resurgence ultimately came too late, though, and they suffered relegation in the penultimate match of the season following a 3–0 defeat to UD Logroñés. He ended the campaign having scored twice in 37 league appearances.

Following his injury, Xiker saw his game time with Athletic feeder-club CD Basconia reduced, and on 5 August 2016 Segunda División B side Toledo announced that the club had signed him on a two-year deal after Athletic agreed to the termination of his contract. Part of the agreement was that Athletic retained the option of re-purchase on Xiker at the end of each season. He made his debut for the club on 3 September, starting in a 2–0 loss to Arenas Club. On 23 October, Xiker suffered a muscular injury in Toledo's 1–0 win over Real Unión and was ruled out for the remainder of the year, with doctors only giving him the clear to return to training on 3 January 2017. He made his long-awaited return to the first team on the final day of the regular season on 14 May, starting in a 3–0 loss to Bilbao Athletic. The result saw Toledo end the campaign in second position, four points behind champions Albacete, and thereby qualified for the play-offs to the Segunda División. The club were ultimately unsuccessful in their bid for promotion, however, as they were knocked out by Atlético Baleares after a 3–1 aggregate defeat.

Xiker is also a former Spanish youth international and represented Spain at various youth levels between 2013 and 2015.

Xiker is a former Spanish youth international and represented the nation at all levels from the U16s to the U19s between 2013 and 2015. In 2015, he was part of the Spain U18 squad which won the Atlantic Cup after beating Portugal, Costa Rica and the Canary Islands. Later that year, he was included in Spain's preliminary squad for the UEFA European Under-19 Championship in Greece. He was one of six players cut from the final squad, however, as Spain went on to claim their seventh title in the competition.

Xiker began his footballing career in 2007 when he joined the academy of Athletic Bilbao. He progressed through the club's youth and reserve sides over the course of the next nine years before being halted by a serious injury. Following his recovery he spent a season each at Segunda División B clubs Toledo and Peña Sport before joining Real Sociedad B in 2018. The following year, he signed for Cornellà before signing for Betis six months later.

Xiker Ozerinjauregi Mendikoetxea (born 30 January 1997), known as Xiker, is a Spanish professional footballer who plays as a central defender for Segunda División B side Sabadell.