Monster Energy Yamaha MotoGP’s Valentino Rossi and Maverick Viñales were back aboard their YZR-M1s yesterday and today for the Misano MotoGP Test and secured fourth and sixth place respectively in the overall combined timesheets.With the Gran Premio Octo di San Marino e della Riviera di Rimini two weeks away, the team-mates used the available testing time to start preparing for next year, and to get a jump on round 13 of the 2019 MotoGP World Championship.Rossi had two productive days at the Misano World Circuit Marco Simoncelli. He was eager to make another step with his bike and was feeling confident as he was strong right from the start of Day 1. At first, he tried the new prototype 2020 bike and later focused on comparing various parts and settings for the 2019-spec, all with positive results. The Doctor completed 68 laps on Day 1 and 67 laps on Day 2 for a 135-lap total. His best time, a 1’32.389s set in the fourth - and last - session on lap 40, put him in fourth place in today’s and the overall standings, 0.750s from first.Viñales was feeling fully motivated to get to work after his podium at the Silverstone Circuit last weekend. Though he struggled with grip on Day 1, he still showed a strong rhythm, completing 93 laps. He continued working on the set-up of his bike today, for 98 laps, until the very end of the last session, when it was time to quickly put his findings to the test. The Spaniard clocked a 1’32.576s, on lap 57/57 in FP4, and ended the day in sixth place in the Day 2 and the overall results, 0.937s from the top.