Sybi Kuchar joined Matt Kuchar on the course on Thursday, caddying for Zach Johnson as her husband enjoyed a fine round.
Despite bogeying the 16th hole for a second successive day, Jordan Spieth was pleased with his second round at Carnoustie.
It promises to be a grandstand weekend at Carnoustie, as Tommy Fleetwood, Rory McIlroy and Jordan Spieth made gains at The Open on Friday.
It was a disappointing end to round two of The Open for Kevin Kisner, who had no regrets over his run-in with the Barry Burn at Carnoustie.
Of the two Johnsons with major honours to their name, Zach admits he is not the "number one".
Kevin Kisner had company atop The Open leaderboard as Tommy Fleetwood shot the lowest round of the week so far on Friday.
Jordan Spieth shares the lead at the Travelers Championship as the American bounced back well from U.S. Open disappointment.
The United States Golf Association (USGA) accepted conditions at the U.S. Open became too difficult during the third round.
Andrew Landry finished runner-up earlier this year, but the 30-year-old did enough to celebrate PGA Tour victory for the first time.
Zach Johnson and Andrew Landry moved a shot clear of the pack, while Trey Mullinax carded a course-record 62.