Rahm fires 66 in Spanish Open defense, trails Johannessen by three

Highlights: Rahm begins title defense with 66 in Spain

0:001:20MADRID – Kristian Krogh Johannessen of Norway shot a career-best 8-under 63 to match the course record and take a two-shot lead after the first round of the Spanish Open on Thursday.

Johannessen birdied four of his last six holes at the Club de Campo Villa de Madrid for the lowest opening round in the event's history. The only bogey for the Norwegian came on the par-4 16th hole, right after he made an eagle on the par-4 15th.

''It was a good round," Johannessen said. ''I didn't hit it perfectly but hit it in the right spots, even when I missed, and I holed some good putts. I'm out there having fun and playing smart. It's a tricky…