With what looked to be the game’s last action, Juve secured a 97th-minute equalizer through Federico Gatti.
Danilo met a deep corner is met, but his header was going miles wide.
Substitute Paul Pogba kept it in play, released a pass to Federico Gatti at the back post, and nodded home the ball.
Gatti snatched a last-gasp equalizer from a corner to keep the Europa League tie in the balance in a match that the host was dire.
Since the away goal rule has been chalked off, Juventus are expected to play with much freedom in Spain.
Filip Kostic’s angled drive across the face of the goal from a promising position didn’t get the touch needed, while Ocampos went closer on a corner, forcing a tricky Wojciech Szczesny save from point-blank range.
Dusan Vlahovic failed to open the goal in 19 minutes as the empty net wa at his mercy. Bounou only flapped at a Kostic roll across, but the striker was put off and incredibly ballooned over the net from close range.
They were eventually punished for missing the chance as Sevilla took the lead. Bryan Gil’s cross-field pass sent Ocampos down the right. The striker then rolled the ball across to find Youssef En-Nesyri in acres of space to sweep in with the inside of the boot from 12 yards, relatively undisturbed.
En-Nesyri could have doubled Sevulla’s advantage when he risked another on the counter, but a heavy touch allowed Szczesny to save.
Sevilla had to take Ocampos off after losing Hik5 to an injury.
The Polish goalie was again called into action when he flew to fingertip the Ivan Rakitic scorcher over the bar and in first-half stoppages.
En-Nesyri got another chance, but his shot skimmed the upright from a distance as Juve was jeered off the field at the break.
To offer a more attacking threat, Max Allegri had to throw on Federico Chiesa and Samuel Iling-Junior to bring pace and attacking threats on the wings, moving to a 4-4-2.
Juve skipper Leonardo Bonucci was removed during his 500th appearance in the Bianconeri jersey ended early as he limped off with a groin injury.
With the last kick of the game, Juve were awarded a corner that Paul Pogba nodded back from the far post for Gatti to head in from point-blank range.