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.
Rugby: Douglas hoping to maintain high standing at Firwood Waterloo
Vagabonds and Ramsey both at home, Vagabonds Ladies on the road at Bury
Football: Laxey and Onchan out to secure Railway Cup spots
Castletown and Colby continue tussle at top of Division 2
Dominic Herbertson joins KTS Racing for 2026
He'll compete for team at next year's TT and North West 200
'Blood, sweat and tears' must go into new team, says Cummins
Manx TT star rooted in reality over challenges of latest venture
Commonwealth Games could have 'very different' feel in 2026
Manx team still facing some unknowns and challenges ahead of Glasgow