There was a fourth place and a seventh place finish for the two Island residents competing in the Spanish MotoGP.
Cal Crutchlow finished outside of the podium places in fourth behind Yamaha team-mate Andrea Dovizioso.
Northern Ireland rider Rea, deputising for injured world champion Casey Stoner, was in a fine seventh place at Aragon.
Dani Pedrosa kept his faint hopes of a first MotoGP championship alive with a dominant win from pole-sitter Jorge Lorenzo.
Football: Railway Cup hopefuls all maintain pace in premier league
Castletown stay four points clear atop Division 2
Rugby: Vagabonds Ladies stay top with another victory
Vagabonds men and Douglas also take respective wins on home soil
Hockey: Harlequins A beat rivals to close in on prem leaders
Bacchas B take important victory in battle for top-flight safety
FC Isle of Man torn apart at Barnoldswick Town
It's the Manx side's heaviest ever league defeat
