Pole-sitter Bautista maintained the guide after the start and quickly built a gap over nearest rival Jonathan Rea.
He was in a class of his own throughout the 20-lap race, and finally asserting a dominant win by over 10 seconds.
Rea was Not Able to keep up with Bautista and needed to concentrate on Pa-ta Yamaha’s Alex Lowes instead, as the Briton shadowed him for Nearly All the race.
But he pulled away in the late stages to fasten moment for the first time in 2019, with Lowes completing precisely the same podium for several 3 races at Buriram.
The Italian’s teammate Sandro Cortese finished seventh, followed closely by Barni Ducati’s Michael Ruben Rinaldi and the Kawasakis of both Toprak Razgatlioglu (Puccetti) and Jordi Torres (Pedercini).
Chaz Davies was in the fight four fourth initially but an aggressive movement by Melandri forced him wide before he retired with a mechanical failure.
Tom Sykes’ BMW additionally broke down early in the race, whereas Eugene Laverty was a non-starter as his motorcycle couldn’t be mended in time from his Saturday accident.