Albert Arenas snatched his second consecutive Moto3 victory with a final corner pass at Jerez to extend his championship lead as chief rival John McPhee crashed out.
Arenas remained solidly within the top ten throughout the 22 lap encounter, the Qatar winner making sure to save his tyres ready for a final dash for victory towards the end of the race.
He duly did so on the final lap, having crossed the line for the penultimate time primed for action in third.
He managed to put a strong move on second-placed McPhee at Turn 9 to move himself within range of race leader Tony Arbolino for a final corner lunge, a move ultimately complicated by the Scotsman diving down the inside of him-making it three wide on entry to the final hairpin.
Arbolino managed to get his Aspar-run KTM stopped and off the corner well though, flashing across the line to take the chequered flag and his second straight win while McPhee ended up in the gravel on the exit of the final corner.
The Petronas SRT man ran wide on the exit of the last turn as he braked impossibly late to try and re-claim the lead he held heading onto the final tour, and was then collected by Arbolino as Celestino Vietti bumped the Snipers man out wide-forcing McPhee to crash out and therefore fail to score.
Second went the way of Ai Ogura who managed to weave his way through the final corner carnage, the Honda Team Asia racer bagging his second consecutive rostrum in the process after taking third at Qatar, while Arbolino held on for third.
Andrea Migno led home VR46 team-mate Vietti in fourth and fifth repectively, with the Ajo KTM machine of Raul Fernandez claiming sixth.
Gabriel Rodrigo-much like at Qatar-failed to make much of an impression on the leading riders throughout the contest but managed a solid seventh ahead of pole-man Tatsuki Suzuki, who failed to convert a strong opening lap to an equally top result.
SIC58 team-mate Niccolo Antonelli was ninth, with Jaume Masia the highest Leopard Racing runner in tenth.
Darryn Binder meanwhile crashed out while battling in the top five on the penultimate tour, the South African pushing his CIP Green Power KTM slightly too hard as he tried to dive down the inside of Arenas for third at Turn 9.
Binder lost the back end of his machine and slid off into the gravel on the outside of the turn, eventually remounting and coming home 18th ahead of Kaito Toba.