MADRID, Sept. 19 (Xinhua) -- Real Madrid is one of three Spanish teams starting their Champions League campaign on Wednesday, hosting Union Berlin at the Santiago Bernabeu Stadium.

Carlo Ancelotti's team enters the match with five wins from five games in La Liga, following a hard-fought 2-1 victory over Real Sociedad over the weekend, with goals from Fede Valverde and Joselu.

Eduardo Camavinga and possibly Nacho Fernandez might be included in Ancelotti's lineup for the match. Luka Modric, who has played a limited role this season, could also start against an opponent that began their season in Germany with two wins and two losses, netting nine goals and conceding seven.

Real Sociedad will also compete in the Champions League, with the San Sebastian team facing a challenging trip to RB Salzburg.

Imanol Alguacil's squad was unfortunate to leave the Bernabeu without points on Sunday. They might have new signing Andre Silva available for their home match against a formidable Inter Milan in a challenging group that includes Benfica and RB Salzburg.

Carlos Fernandez or Umar Sadiq could potentially replace Mikel Oyarzabal in the starting lineup, but it seems unlikely that Imanol will make significant changes.

Sevilla secured their first win of the season over the weekend with a 1-0 victory against Las Palmas, a timely boost as they commence their European campaign at home against Lens.

Although he guided the club to Europa League success last season, this will be Jose Luis Mendilibar's inaugural Champions League experience as a coach. A group featuring PSV, Arsenal, and Lens leaves Sevilla with little margin for error.

With matches against Arsenal and PSV upcoming, Sevilla must start with a victory. The acquisition of Sergio Ramos appears to have bolstered Sevilla's defense, but Tanguay and Marcos Acuna are both expected to be sidelined due to injuries.