By sinking into a lead in Madrid jon Rahm place himself in pole position for a powerful Open de Espana name defence.
Rahm submitted an eagle and five birdies at an extraordinary back nine at Club de Campo to card an eight-under 63, the days lowest round, and also pull clear of the chasing pack on home soil.
The world No 5 closest challenge comes from duo Rafa Cabrera Bello and Samuel Del Val, who share moment on 12 under back in fourth after a 65.
Ive got a great opportunity to defend this name, Rahm said. I am feeling great so hopefully I can keep doing what Im doing, hitting it good off the tee hitting good iron shots, and then the remainder will take care of itself.
Rahm wrapped at a six-footer in the par-three followed and third a tap-in birdie to grab the advantage.
Rahm carded a three-putt bogey and didnt get up and down from off the green to fall the next shot and reach the turn off two off the speed, only to begin a remarkable nine.
The Spaniard then proceeded on a run of four consecutive birdies from the 12th, all from inside six feet, prior to stretching his lead with a remarkable eagle from the middle of the fairway.
Although Rahm was unable to improve his own birdie tally over the stretch, ending with pars, his lead increased to five Del Val shut his third-round 69 with a bogey.
Rafa Cabrera Bello submitted a 70 although Adri Arnaus signed to get a one-over 72 to fall at a share of fifth with Zander Lombard and Jason Scrivener to combine Del Val on 12 under.
Wholl win the Open de Espana? See the final round live on Sunday from midday on Sky Sports Golf.
Read more: Sportslivestream TV