Fox and Brown started comparatively slowly, sitting at even par through four holes, but got on a hot streak during the middle of the round, and finished it off with a birdie on 18.
Brown was pleased with how his combination with Fox immediately gelled.
"We had a pretty good strategy where I'd tee off first every hole and try and get the ball in play. When I did that, Foxy would hit his driver and really attack the course, so we combined well.
"It was a little bit tough starting out this morning, it was blowing and cold. The first few holes were playing pretty tough but we got through those and managed to finish pretty strong on the back nine, so we're both really satisfied."
Scores won't be as low tomorrow, with the format shifting to foursomes, where the players take alternate shots, and Brown says it will be a crucial round.
"It's a hard format. Today we had two chances every hole and you could blaze away a little bit, but teeing off on alternate holes, you've got to hit good tee shots on your own to put your partner in play, and try and play a really solid round of golf. I think we've got a pretty good gameplan for the course.
"There's a bit of pressure on me this week, probably self-imposed, but Foxy was nice enough to give me the invite, so I wanted to re-pay that a little bit, but there were a couple of holes there where he saved my bacon as well. That's the nature of the week – hopefully we keep combining well."
Fox and Brown tee off in their second round at 1.55pm tomorrow.