Rahm's highlights from Sunday include an eagle on the fourth hole from 150 yards out.
It could have been even better for Rahm, who bogeyed two of the last three holes in challenging conditions on the Northern Irish coast.
Like Rose, Im faltered early, with bogeys on the second and third.
It was Rahm's first win on the European Tour and his second win as a pro, following his victory in the Farmers Insurance Open in January.
Former Wimbledon finalists Kerber, Muguruza set to meet
She next faces Rybarikova, who eased into the last 16 of a Major for the first time with a 6-2, 6-1 win over Lesia Tsurenko. The third-round match was suspended Friday by darkness after 2 hours, 54 minutes with Querrey leading 6-5 in the fifth set.
"I've never led going into the final round so I am a little inexperienced in that sense", said Rahm, who was persuaded to play the event by tournament host Rory McIlroy.
"I know that Government support is required and I have been working to secure that support".
"It's disappointing because I felt like I was playing well coming into the week and I need to do some practice over the weekend and get ready for next week", McIlroy said.
"I have exceeded my expectations massively".
Firefighters battle massive blaze in Oakland
It stretches across three blocks and had a planned 225 apartments and 2,300 square feet of retail space. Firefighters have closed roads in the surrounding area, including Grand Avenue at Valdez Street.
Ruddy himself said afterwards "it's the people that make it so special" and 2018 will showcase to the world not just one of his masterpieces but the famous Donegal hospitality. "It's going to be fantastic playing with Jon Rahm".
Julien Quesne and Scott Hend both shot 64s for the lowest round of the day and are fifth and sixth, respectively. Fleetwood has earned more world ranking points in 2017 than any player except Dustin Johnson.
The errant ball-placement-a matter of millimeters-was discussed between Rahm, Im, and European Tour chief referee Andy McPhee, and ultimately Rahm was not penalized. 8-11 and added birdies on 13, 15 and 17.
NBA Summer League recap: Bucks drop opener 82-53 to Cavaliers
In total, 63 games from Las Vegas will air across ESPN and NBA TV's linear channels - a Summer League record. If you can't make it out to Las Vegas to watch in person the games will be streamed live on television .