Who: Barcelona vs Real MadridWhat: Spanish Super Cup finalWhere: King Abdullah Sports City Stadium in Jeddah, Saudi ArabiaWhen: Sunday, January 11, at 8pm (19:00 GMT)How to follow: We will have all the buildup on Al Jazeera Sport from 15:00 GMT, in advance of our text commentary stream.One of sport’s greatest matchups will grace the King Abdullah Sports City Stadium in Jeddah on Sunday as Barcelona face fierce rivals Real Madrid in the final of the Spanish Super Cup.Recommended Stories list of 4 itemsend of listBarca, the defending champions who beat Real in last year’s final, are the team to stop once more in Spain’s top flight, La Liga.Real, on the other hand, are under increasing pressure, especially their new manager, Xabi Alonso.Al Jazeera Sport takes a look at a final that carries so much more weight when it holds the tag: El Clasico.Why are Real Madrid and Xabi Alonso under pressure?Alonso has steadied Real Madrid’s ship in recent weeks after a tumultuous period, but the Spanish Super Cup final seems a make-or-break moment for the beleaguered coach.On the brink of the sack after a dire run of form, Alonso responded by leading Madrid to five consecutive victories, the fifth coming on Thursday against Atletico Madrid in the semifinals.Beating Super Cup holders Barcelona would bring Alonso the first trophy at the helm.A second victory in two matches against Barcelona would buy Alonso time and breathing room.But succumbing to Hansi Flick’s side would give Real president Florentino Perez a further excuse to remove a coach he …