New Delhi, Nov. 10 -- Robert Lewandowski scored a hat trick to help Barcelona gain ground on Real Madrid in the Spanish league on Sunday.

After Madrid was held by Rayo Vallecano to a 0-0 draw - its second consecutive setback following a Champions League loss at Liverpool - Lewandowski and Lamine Yamal led Barcelona to a 4-2 victory at Celta Vigo to move the Catalan club within three points of the lead.

Villarreal, which won 2-0 at Espanyol on Saturday for its third league victory in a row, stayed in third place, five points behind Madrid. Atletico Madrid, which beat Levante 3-1 at home on Saturday, was fourth, six points off the lead.

Barcelona's offensive struggles continued - it has conceded 16 goals in its last eight matches and has...