Fabio Quartararo was left baffled as to why his leather race suit split open as he slipped from pole position to a fourth-place finish at the Catalan Grand Prix.

MotoGP championship leader Quartararo was aiming to seal back-to-back wins in Barcelona following his triumph on the circuit in 2020, but the Monster Energy Yahama driver slipped up early on and failed to finish on the podium.

Miguel Oliveira got Red Bull KTM's first win of the season, and the third race victory of his career, with Johann Zarco and Jack Miller completing the top three.

Quartararo was second until the final three laps, when Zarco made a daring overtake and caught the Frenchman out.

To complicate matters, Quartararo's suit had opened, with the 22-year-old's chest protector also slipping out.

He cut two corners as he battled with Miller for third, and was handed a three second penalty which cost him a third straight podium position at the Catalan Grand Prix.

"What happened I don’t know, I just know that I had the leathers completely open," he explained to reporters.

"I tried to just put it in a normal position again, I couldn't do it. So was difficult to ride, but unfortunately, it happens.

"It happened today, so Alpinestars is looking at how it's possible because at the end of the race it was possible to close it again.

"But it's like this, it was not our day but I can be happy with this fourth position… well, third, but finishing fourth."

Former MotoGP champion Casey Stoner tweeted his thoughts on the incident, insisting Quartararo should have been disqualified from the race.

"Well, I think I already have a penalty that I don't agree [with], demoted three seconds from P3 to P4," Quartararo said when Stoner's comments were put to him.

"I think this penalty is quite enough. It's finished, the race is finished, everything is safe.

"So, I think right now it's not enough to talk anymore because the race is finished. I think there's no point to talk anymore about these possible things."

It was a race which belonged to Oliveira, with the Portuguese rider holding the lead for 23 laps.

"The most difficult thing about the race was the mental ability to stay calm, it was so easy to be aggressive or to just override the tires at the beginning," he said in a news conference.

"I felt like that was the key, stay calm and the race will come to me."

Elsewhere in a frantic race, six-time MotoGP champion Marc Marquez crashed out on Turn 10, which also claimed Valentino Rossi and Aleix Espargaro.

Marquez has now failed to finish the last three races, a career first for the 28-year-old.

Marc Marquez did not finish a MotoGP race for the third straight time, a career first, as Miguel Oliveira triumphed at the Catalan Grand Prix.

Six-time MotoGP champion Marquez has not had the best of luck since returning from an injury that kept him out for the majority of 2020 and, after crashing in the Italian Grand Prix last week, the Spaniard suffered a similar fate on Sunday.

Marquez, aiming for a fifth consecutive podium finish in his home grand prix, spun out of control at turn 10, shortly after Danilo Petrucci and Pol Espargaro had crashed out, with Aleix Espargaro soon joining his younger sibling.

Aleix Espargaro, sixth at the time, fell foul of the same corner that did for Marquez, who desperately tried to right his bike but was swiftly ushered away by track emergency staff as he followed up retirements in France and Italy.

Turn 10 subsequently claimed another big name, Valentino Rossi, who managed his best finish of the season at the Italian Grand Prix (10th) but ended up skidding off the track here.

Yet up ahead, it was a demonstration of complete control from Oliveira (Red Bull KTM), who led for 23 laps in total after capitalising on a mistake from early front-runner Jack Miller.

The Australian had himself pounced on an error by championship leader Fabio Quartararo, who had claimed his fifth consecutive pole and was aiming for a career-first fourth win of a single season.

Yet despite fighting back to close the gap on Oliveira, Quartararo could not win in Barcelona as he did in 2020, and ultimately had to settle for fourth place, missing out on a third straight podium finish at the circuit.

Johann Zarco's daring overtake with three laps to go did the initial damage for Quartararo, who lost part of his protective leathers as he attempted to hold off Miller's challenge for third, but the Monster Energy Yamaha driver was handed a three second penalty.

It is Miller's first appearance on the Barcelona podium in seven attempts in MotoGP, while Zarco has surpassed his previous best tally of three top-three finishes in a single season.

Yet the day belonged to Oliveira, the Portuguese rider holding steady to clinch a third MotoGP race win.

TOP 10
1. Miguel Oliveira (Red Bull KTM)
2. Johann Zarco (Pramac Racing) +0.175
3. Jack Miller (Ducati) +1.990s
4. Fabio Quartararo (Monster Energy Yamaha) +4.815s
5. Joan Mir (Suzuki Ecstar) +5.325s
6. Maverick Vinales (Monster Energy Yamaha) +6.281s
7. Francesco Bagnaia (Ducati) +8.175s
8. Brad Binder (Red Bull KTM) +8.378s
9. Franco Morbidelli (Petronas Yamaha) +15.652s
10. Enea Bastianini (Reale Avintia Racing) +19.297s

CHAMPIONSHIP STANDINGS

Riders

1. Fabio Quartararo (Monster Energy Yamaha) 118
2. Johann Zarco (Pramac Racing) 101
3. Jack Miller (Ducati) 90
4. Francesco Bagnaia (Ducati) 88
5. Joan Mir (Suzuki Ecstar) 76

Teams
1. Monster Energy Yamaha 192
2. Ducati 178
3. Pramac Racing 124
4. Suzuki Ecstar 99
5. Red Bull KTM 97

What's next?

The MotoGP schedule takes in Germany, with Chemnitz's Sachsenring hosting the German Grand Prix in two weeks' time.

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