James Toseland and Ruben Xaus suffered a frustrating start to their respective BMW and Honda careers during testing at Portimao as rain stopped them from completing any dry mileage.
Persistent showers hampered the test all day, preventing any of the present riders from conducting more than just a handful of laps at a time.
It was a particularly frustrating day for Toseland and Xaus, who were making their debuts with BMW Italia and Ten Kate Honda respectively, though the former did get a chance to ride the factory BMW test bike in the wet, while the latter also managed to get out on track.
A number of riders are out in Portugal for testing, with Jonathan Rea signalling his comeback from injury with the quickest lap at around 1min 58secs, approximately 15secs off the ultimate pace. Leon Haslam was second fastest on the BMW.
Noriyuki Haga, Michel Fabrizio, Maxime Berger, Ayrton Badovini and Troy Corser are also in Portugal for testing, but no official lap times were taken.
Testing concludes today [Tuesday]