Kamui Kobayashi is leading the FIA WEC Six Hours of Spa at the halfway mark in the No. 7 Toyota TS050 Hybrid LMP1, 25 seconds ahead of Anthony Davidson in the sister No. 8 entry.
Mike Conway extended the lead of the No. 7 Toyota to almost half a minute in the second hour, while Porsche had some minor hiccups on both cars.
Pole-sitter Andre Lotterer struggled with his tires during the opening stint, with Porsche opting to change tires and drivers on the No. 1 Porsche 919 Hybrid already during the first round of pitstops, putting it off sequence with the rest of the LMP1 field.
Earl Bamber suffered a slow puncture in the No. 2 Porsche not long after its second stop, resulting in an additional visit to the pits.
The No. 9 Toyota in low-downforce trim was initially able to keep up with the pace of the leaders, but later dropped back to fifth with Yuji Kunimoto behind the wheel.
LMP2 saw two battles for the lead. Bruno Senna built up a 30-second lead in the No. 31 Vallainte Rebellion Oreca 07 Gibson before handing of to Julien Canal.
The Frenchman then saw that lead evaporate, as he was hunted down and overtaken by Alex Lynn in the No. 26 G-Drive Racing Oreca.
Alex Brundle, however, was even faster in the No. 37 Jackie Chan DC Racing Oreca and took over the lead from Lynn 25 minutes later.
Both the G-Drive and Rebellion Orecas passed the Jackie Chan DC Racing again when David Cheng took over from Brundle.
The two AF Corse Ferrari 488 GTEs controlled GTE-Pro, with James Calado in the No. 71 and Davide Rigon in the No. 51 lapping the track in formation for most of the time.
Billy Johnson is currently in third in the No. 66 Chip Ganassi Racing Ford GT, with the gap to the leading Ferraris hovering around 20 seconds.
The No. 67 Ford GT lost a lot of ground when it pitted with a completely empty tank and had to reset the car at Raidillon.
The No. 98 Aston Martin Racing Vantage V8 of Paul Dalla Lana, Pedro Lamy and Mathias Lauda is comfortably leading GTE-Am, despite 10 seconds added to one of the pitstops for an infringement on the grid.
RESULTS: Hour 3