David Salom has taken a significant stride towards becoming the first - and possibly only - rider to win the World Superbike Championship EVO title after two more category wins at Laguna Seca saw him swell his advantage to 37 points.

The Spaniard has emerged as the class of the field aboard his Kawasaki Racing ZX-10R in 2014, often out-performing his grid positions to come on stronger in the races.

Indeed, though he has arguably benefitted from closest rival on pace Ayrton Badovini being unable to score points on the non-homologated Alstare Bimota, Salom has made the most of his consistent performances having taken points in all but one race this year.

As such, two more wins in the United States - which included a run to eighth place overall for the best classified finish by an EVO rider -, has seen Salom multiply his advantage to 37 points, making him all but odds-on favourite for the class title.

To put into context, closest rival Niccolo Canepa will need to out-score Salom by more than 4.6 points in each of the remaining eight races to overhaul him, a tough ask given the points format.

"Two Evo class wins but every race the competition gets stronger, so it is not easy," he said, referring to Badovini and Christian Iddon, who finished 1-2 in race two before being removed from the results. "In the championship we have more points over our main competition going into the summer break.

"It was a very difficult weekend in practice here because I could not do one very fast lap but in race one I did not get a good start but I pushed the whole race. I needed to keep my concentration and winning was a very good end result for us. Race two was very short but we won our part of it again and now we have a bigger lead in the EVO class."

With a unified grid utilising revised technical regulations set to come into force in 2015, Salom stands to become the one and only winner of the EVO category.