Barcelona. Catalan club Barcelona has further strengthened its grip on the top spot of La Liga by narrowly defeating Rayo Vallecano at their home ground, Camp Nou. In a tight 1-0 victory on Sunday night, Hansi Flick's team temporarily extended their lead over second-placed Real Madrid to seven points. However, this gap reduced back to four points after Real Madrid defeated Atletico Madrid 3-2 in another match played on the same Sunday.Barcelona took the lead in the 24th minute when Ronald Araujo converted a corner taken by Joao Cancelo with an excellent header. However, the visiting team, Rayo Vallecano, missed...