Red Bull’s Daniel Ricciardo clocked the quickest time during a closely-contested second practice session for the Mexican Grand Prix, as several frontrunners hit trouble.
Ricciardo set a time of 1:17.801 on the Ultrasoft tyres to wind up 0.131s faster than Lewis Hamilton, who scuppered his early run on Supersofts when he spun through the left-hander at Turn 11.
Hamilton stopped short of hitting the wall but had to return to the pits, cutting short his run, before re-emerging for his low-fuel stint on the Ultrasofts.
Max Verstappen was third fastest, though he missed out on the bulk of the long runs after he suffered an engine problem, bringing his session to a premature end.
Sebastian Vettel, meanwhile finished fourth, 0.250s behind Ricciardo, having had to abort one run when the fire extinguisher in his SF70-H went off.
Vettel returned to the Ferrari garage and changed his stained overalls for a fresh set, as the team addressed the problem.
The Ferrari driver then had to abort his first Ultrasoft lap after running wide through Turn 11, due to mid-corner oversteer, before duly posting his quickest time a few minutes later.
Kimi Räikkönen was fifth quickest, with FP1 pacesetter Valtteri Bottas sixth, having lost a minor piece of bodywork on his hot lap, the leading three teams covered by less than half a second.
McLaren-Honda’s Fernando Alonso led the midfield battle, 0.707s behind Ricciardo, in turn putting a gap of two-tenths over Force India’s Sergio Pérez.
Nico Hülkenberg was ninth quickest for Renault, as Esteban Ocon rounded out the top 10 for Force India, in front of Carlos Sainz Jr., who had a quick spin at Turn 3.
Toro Rosso's Brendon Hartley, via a Turn 6 spin, split Williams pair Felipe Massa and Lance Stroll, the youngster looping his FW40 through Turn 5 and narrowly avoiding the barriers.
Stoffel Vandoorne, after minimal running in FP1 due to a power unit problem, was 15th quickest, having also been delayed by a loose wheel early in the session.
Pascal Wehrlein finished 16th for Sauber, ahead of Kevin Magnussen, Marcus Ericsson and Pierre Gasly, who completed only a handful of laps due to a power unit problem.
Haas’ Romain Grosjean, having sat out the first session in favour of Antonio Giovinazzi, spun through the final corner due to a suspected tyre issue early on in proceedings.
Grosjean re-joined the track but the delaminating left-rear tyre shattered parts of the VF-17 and he was forced into the pits with damage, while the subsequent debris caused the session to be red-flagged.
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