Mirroring the results of the first race, Checa led Michel Fabrizio and Eugene Laverty in fourth and fifth positions, while Ayrton Badovini completed another strong points' haul in sixth position as he consolidates his new peak of eighth in the standings.
Behind, Leon Haslam came through into seventh place after a fierce tussle with Joan Lascorz ended with the pair making contact on the exit of the final corner, the BMW man just edging his Kawasaki rival. Despite this, eighth sees Lascorz leapfrog his team-mate Tom Sykes in the standings, the Briton finishing down in 14th.
Sylvain Guintoli and Noriyuki Haga rounded out the top ten after a fairly quiet day, ahead of Pedercini Kawasaki duo Roberto Rolfo and Mark Aitchison, BMW Italia stand-in Lorenzo Lanzi, Sykes and wild-card Viktor Kispataki, who made the most of the retirements to score a point on his WSBK debut.
Meanwhile, Leon Camier suffered a costly retirement when he crashed out of 11th position, while Alex Lowes's maiden WSBK weekend came to a similarly destructive end on lap five. His retirement compounded a poor day for Castrol Honda after Ruben Xaus didn't make the second start, along with Chris Vermeulen.