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Crutchlow is the first Briton to win an elite-class GP since Barry Sheene in 1981

Cal Crutchlow dominated a rain-hit Czech Republic Grand Prix as he became Britain's first MotoGP winner in 35 years.

Barry Sheene in 1981 was the last British rider to win an elite-class GP.

Seven-time champion Valentino Rossi took second with championship leader Marc Marquez of Spain in third.

"It's the best day of my racing career," said the 30-year-old, who started 10th on the grid in Brno and took the lead with seven laps to go.

Marquez leads Italy's Rossi in the riders' championship by 53 points, with Crutchlow moving up to 10th.

Meanwhile John McPhee became the first Scotsman to win a motorcycle GP since 1962 with victory in MotoGP3.

Germany's Jonas Folger won the MotoGP2 race.

The next race is the British GP at Silverstone on 4 September.

Czech GP result:

1. Cal Crutchlow (GB) Honda 47 minutes 44.290 seconds

2. Valentino Rossi (Ita) Yamaha 47:51.588

3. Marc Marquez (Spa) Honda 47:53.877

4. Loris Baz (Fra) Ducati 47:56.848

5. Hector Barbera (Spa) Ducati 47:57.383

6. Eugene Laverty (Ire) Ducati 47:58.102

7. Danilo Petrucci (Ita) Ducati 48:07.704

8. Andrea Iannone (Ita) Ducati 48:08.852

9. Maverick Vinales (Spa) Suzuki 48:08.871

10. Tito Rabat (Spa) Honda 48:21.421

MotoGP standings

1. Marc Marquez (Spain) Honda 197 points

2. Valentino Rossi (Italy) Yamaha 144

3. Jorge Lorenzo (Spain) Yamaha 138

4. Dani Pedrosa (Spain) Honda 109

5. Maverick Vinales (Spain) Suzuki 100

6. Andrea Iannone (Italy) Ducati 96

7. Pol Espargaro (Spain) Yamaha 81

8. Andrea Dovizioso (Italy) Ducati 79

9. Hector Barbera (Spain) Ducati 76

10. Cal Crutchlow (Britain) Honda 66