Monster Energy Yamaha MotoGP Team's Maverick Viñales and Valentino Rossi wrapped up a long weekend at the Automotodrom Brno today, succesfully completing the MotoGP Brno Test. Both riders were back on track for the eight-hour session, during which they had the chance to test prototype material.The MotoGP Brno Test was the first opportunity for the Yamaha Factory Team to try a new engine spec, aimed at an increased top speed and improved rideability, as well as some other testing items, among them two new Michelin tyres and a medium rear with the existing casing and a new compound on the left-hand side.Viñales, as usual, showed his hard-working nature, riding until the very end of the session and completing 74 laps in total. His best time of 1’55.628s was set in the final stages, on lap 68, earning him second place, just 0.012s from first. Today’s outing was overall successful for the Spaniard. He worked mainly on improving the 2019 bike’s performance for the next races and is looking forward to stepping up to the challenge in the Austrian Grand Prix.Rossi also had a very productive day of testing in Brno. He spent time trying the 2020 prototype “black bike”, as well as the standard 2019 YZR-M1. The Doctor completed 63 laps in total and really put his head down on the last stint. His final lap saw him move up to sixth place with a 1’56.015s and a 0.399s gap to first. His time was 0.512s quicker than the Italian’s best time set during the Czech GP weekend, giving him a confidence boost that he is working in the right direction.