Monday marked the second day of official 2018 MotoGP testing at Sepang in Malaysia.

All 23 confirmed race riders are present, plus some test riders, while Yonny Hernandez has been called-up by Tech 3 as they continue the search to replace Jonas Folger.

Rookie Thomas Luthi is making his Marc VDS Honda debut after missing the end of the 2017 season due to injuries at October's Malaysian Moto2 race weekend.

Kohta Nozane and Katsuyuki Nakasuga are the Yamaha Test Riders listed as present, but appear to be alternating between three different bikes.

Testing began at 10am, but a damp track kept all riders in the pits until 11am. There was a brief red flag period after 3pm to clean the track after a fall for Pol Espargaro, who was taken to the medical centre and later declared ok.

The final hour, from 5-6pm, saw a series of changes at the top of the timesheets, ending with a Movistar Yamaha one-two for Maverick Vinales and Valentino Rossi.

The M1 duo - like Honda riders Cal Crutchlow, Dani Pedrosa and Marc Marquez - tried their new fairing designs today.

The final day of Sepang testing takes place on Tuesday.

1. ^10 Maverick Viñales ESP Movistar Yamaha (YZR-M1) 1m 59.355s [Lap 66/68]
2. ^1 Valentino Rossi ITA Movistar Yamaha (YZR-M1) 1m 59.390s +0.035s [38/39]
3. ^4 Cal Crutchlow GBR LCR Honda (RC213V) 1m 59.443s +0.088s [56/65]
4. ^1 Jorge Lorenzo ESP Ducati Team (GP18) 1m 59.498s +0.143s [37/44]
5. ˅1 Jack Miller AUS Pramac Ducati (GP17) 1m 59.509s +0.154s [43/44]
6. ^9 Johann Zarco FRA Monster Yamaha Tech3 (YZR-M1) 1m 59.702s +0.347s [45/48]
7. ˅6 Marc Marquez ESP Repsol Honda (RC213V) 1m 59.730s +0.375s [51/68]
8. ˅6 Andrea Dovizioso ITA Ducati Team (GP18) 1m 59.732s +0.377s [20/32]
9. ^3 Danilo Petrucci ITA Pramac Ducati (GP18) 1m 59.747s +0.392s [45/46]
10. ^3 Andrea Iannone ITA Suzuki Ecstar (GSX-RR) 1m 59.917s +0.562s [56/57]
11. ^3 Aleix Espargaro ESP Factory Aprilia Gresini (RS-GP) 1m 59.925s +0.570s [40/47]
12. ˅4 Dani Pedrosa ESP Repsol Honda (RC213V) 1m 59.999s +0.644s [51/56]
13. ˅7 Alex Rins ESP Suzuki Ecstar (GSX-RR)* 2m 0.042s +0.687s [25/56]
14. ˅5 Pol Espargaro ESP Red Bull KTM Factory (RC16) 2m 0.262s +0.907s [7/22]
15. ˅5 Tito Rabat ESP Reale Avintia (GP17) 2m 0.506s +1.151s [11/48]
16. ^4 Bradley Smith GBR Red Bull KTM Factory (RC16) 2m 0.520s +1.165s [37/42]
17. ^6 Franco Morbidelli ESP EG 0,0 Marc VDS (RC213V)* 2m 0.662s +1.307s [35/36]
18. ˅1 Mika Kallio FIN Red Bull KTM Factory (RC16) 2m 0.701s +1.346s [44/51]
19. ˅3 Alvaro Bautista ESP Angel Nieto Team (GP17) 2m 0.728s +1.373s [47/58]
20. ^1 Karel Abraham CZE Angel Nieto Team (GP16) 2m 0.914s +1.559s [50/53]
21. ˅3 Takaaki Nakagami GBR LCR Honda (RC213V) 2m 0.952s +1.597s [19/50]
22. ˅3 Sylvain Guintoli FRA Suzuki Ecstar (GSX-RR) 2m 1.392s +2.037s [5/46]
23. ˅1 Scott Redding GBR Factory Aprilia Gresini (RS-GP) 2m 1.456s +2.101s [48/51]
24. ^1 Yamaha Test 3 JPN Yamaha Test Rider (YZR-M1) 2m 1.480s +2.125s [36/37]
25. ^1 Yonny Hernandez COL Monster Yamaha Tech3 (YZR-M1) 2m 1.554s +2.199s [43/49]
26. ^1 Xavier Simeon ESP Reale Avintia (GP16)* 2m 1.689s +2.334s [40/41]
27. ˅3 Tom Luthi SWI EG 0,0 Marc VDS (RC213V)* 2m 1.810s +2.455s [37/47]
28. = Yamaha Test 2 JPN Yamaha Test Rider (YZR-M1) 2m 2.573s +3.218s [23/33]
* Rookie

˄X Rider has X higher positions than end of previous hour.
= Rider has same position as end of previous hour.
˅X Rider has X lower positions than end of previous hour.

Blue = Factory Team.
Red = Satellite Team.

Fastest Day 1 time:
<Dani Pedrosa SPA Honda 1m 59.427s

Official Sepang MotoGP records:
Best lap:
Jorge Lorenzo SPA Yamaha 2m 0.606s (2015)
Fastest race lap:
Dani Pedrosa SPA Honda 1m 59.053s (2015)

Unofficial Sepang MotoGP record:
Marc Marquez SPA Honda 1m 58.867s (2015 testing)

By Peter McLaren