The World Superbike Saturday race was twenty laps on a 32ºC sunny day at Thailand's Chang International circuit, next door to Buriram United's "Thunder Castle" football stadium.
In Superpole one, sixteen riders challenged for the two qualifying spots, with Azlan Shah Kamaruzaman, replacing Kenan Sofuoglu, and Thai wildcard Ratthapong Wilairot the favourites to get promoted.
Nine riders contested a hot Superpole one, as the sun came out, with only two getting promoted to Superpole two. Lorenzo Savadori and Loris Baz were the two favourites for promotion in the first session.
Jules Cluzel set the quickest time in the morning's session, ahead of three other Yamahas: Lucas Mahias, Federico Caricasulo and Randy Krummenacher.
Alex Lowes was the quickest in the morning's untimed session, ahead of Chaz Davies and just off a tenth from Jonathan Rea's fastest time yesterday.
Press releases from the teams and series organizers after the first day of practice at the Thai round of WorldSBK:
#THAIWorldSBK– Day 1
Rea and Sykes back on top after tough day in Buriram
One second separates the top five after action filled FP3
After a tough start to the day, Jonathan Rea (Kawasaki Racing Team WorldSBK) did what he does best and ended on top.
Jonathan Rea heads to Saturday in provisional pole position, with Tom Sykes, Jordi Torres and Marco Melandri within a tenth of a second of his quickest time.
Randy Krummenacher swapped places at the top with Lucas Mahias while Federico Caricasulo remained third quickest. The leading trio were joined by a fourth Yamaha, that of Jules Cluzel, ahead of the first non-Yamaha, Ant West on the Kawasaki.
Eugene Laverty made a late charge to take the top spot held by Xavi Fores the majority of the session, joined by Leon Camier under 1'34 this session. Jonathan Rea broke into the top ten with the third quickest time after this morning's eleventh.
Kenan Sofuoglu will miss the Thai round as he hasn't fully recovered from his leg injury from last round's FP3. Reigning world champion Lucas Mahias, Randy Krummenacher and Federico Caricasulo made the most of this and took the top three places in a Yamaha 1-2-3.