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Kev Coghlan has laid down an impressive marker for his World Supersport rivals to aim for as he dominated first free practice around Motorland Aragon.

A circuit that has been kind to the Scot in the past, having briefly led the WSS race in Spain last year, Phillip Island podium winner Coghlan was in devastating FP1 form aboard the DMC Panavto Yamaha as he kept his rivals at a substantial margin from start-to-finish.

Opening up with a lap of 2mins 03.361secs within the first ten minutes, that time alone would have been good enough to top the timesheets at the chequered flag by four tenths of a second, but a further improvement later on would see him end the morning with a 2mins 02.829secs effort.

As such, Coghlan would find himself almost a second up on closest rival PJ Jacobsen, the Kawasaki Intermoto rider impressive but distant in second position.

Phillip Island race winner Jules Cluzel was third quickest aboard the Yakhnich MV Agusta, albeit level on time with PATA Honda rider Michael van der Mark, with team-mate Lorenzo Zanetti in fifth position.

Elsewhere, Florian Marino was sixth best on the second of the three Intermoto Kawasakis, heading up a train of Hondas from Jack Kennedy to Riccardo Russo, Marco Bussolotti, Ratthapark Wilairot and Raffaele de Rosa.

Title favourite and three-time champion Kenan Sofuoglu, meanwhile, is on the back foot after technical issues on his MAHI Kawasaki saw him complete just a couple of laps, leaving him 13th overall.