In 16 games involving the superpowers of Spanish football this season they have combined to score 52 goals. A whopping 3.25 goals per game while conceding only 9 – Real Madrid accounting for all of the conceded goals. Cristiano Ronaldo has bagged 15, Neymar is second in the goalscoring charts with eight and Lionel Messi has seven with the supporting cast from either side chipping in with the rest. Lest we forget, Luis Suarez is set to return on Saturday in what is being billed as one of the most explosive and attacking El Clasicos in recent memory.

Real Madrid signed their goalkeeper for the future in Keylor Navas for €10 million during the summer from Levante and Borrusia Monchengladbach were the source of Barcelona's future netminder in Andre Ter-Stegen – who they landed for €12 million during the same transfer window. Neither players has gotten much of a look-in and while the focus is predominantly on the attacking talent from either side of the El Clasico divide, the standard of goalkeeping will be key to who brings home the spoils on Saturday evening.

Iker Casillas has improved since being dropped form the Spanish national side following an error against Slovakia which led to a goal. He has acquitted himself well since and against Liverpool he dealt with all and any threats in front of his goal. He also kept a clean sheet during a 5-0 mauling of Levante in the interim.

Claudio Bravo, on the other hand, has excelled in his role as Barcelona's number one and has broken a record for minutes without conceding a goal to start the La Liga season – the record was previously held by Victor Valdes at 720 minutes to start the 2008-09 season.

Real Madrid proved this year that they can adapt to change having lost Angel di Maria and Xabi Alonso during the summer and played a controlled game against Liverpool in the Champions League. They also hold the ability to sit back and counter-attack better than any team in the world. In Toni Kroos, they have a player with a large repertoire of short and long range passing to go along with the versatile Luka Modric and the attack-minded James Rodriguez. Sitting back and protecting Casillas's goal might be the ploy on Saturday but the former Spanish number one will be tested often and whether or not he can keep his recent run of confidence-inducing form going will be a massive question come kick-off time.

Barcelona's defense has improved due to a reshuffling during the offseason and in Jeremy Mathieu they have found their replacement for Carlos Puyol. He is deceptively quick, mobile and strong and might be a reason for Bravo's impressive record to start the season. Can he handle the savvy movement of Karim Benzema et al in what will prove to be a test and an indicator of where either team stands in terms of quality. Again, Bravo will be tested against this Real Madrid side given the fact that they can score all kind of goals. Long-range, counter-attack and set-pieces are all possibilities and while Bravo holds the record, questions marks still linger over aspects of his game.

While we have out eyes peeled for the attacking prowess on display, keep your eye on either goal and how they respond to the pressure from their opponents.