Though his name wasn't mentioned in the wrap-ups after Round 1, Day was quietly in the mix with a 70 on Thursday.
After sinking a 22-foot par putt at the ninth, Matsuyama began his birdie charge with a 12-foot putt at the par-4 12th and six-footers at the par-3 13th and par-4 14th.
Turns out there is a plan for Kisner to play the sprawling North Carolina gem; it just took a little research and a monsoon of patience - which has not always been among the 33-year-old's strengths.
Both made birdie on the 18th hole with lengthy putts that trickled - and trickled - into the cup.
"Historically I'm pretty solid with the lead so that was kind of the goal", Spieth said. A nice 14-15 foot for par steadied me and on seventh two good shots to get to around 25 feet and two-putted for par. "I can't imagine how much faster they are going to get".
For the second consecutive major championship, a dejected Phil Mickelson left the premises after two rounds, shaking his head and looking like a shadow of the man who's won 42 PGA Tour titles, including three Masters, the 2005 PGA Championship and the 2013 British Open.
There will be those who will wonder if Kisner has the staying power to finish off a major, even after such a strong start. But I've just got to focus on just trying to control what I can do out there, which is obviously one shot at a time, which, very cliché. Fowler shot a two-under 69 in the first round, and he is five strokes behind Kisner as he prepares for his second round.
"I played with Tyrrell (Hatton) as well so it was us three". "Length is a key factor out here, and especially when it's as wet as it is, it makes those fairways a bit wider". That might be the worst thing that happened all day to Kisner. "It gives me a lot of confidence".
The popular American had two birdies and just one bogey on his scorecard and he remained in contention for a maiden major despite failing to birdie any of the par fives in round two.
Kisner, 33, endured four runner-up finishes in 2015 before a breakthrough first US PGA Tour victory at Sea Island, Georgia, in his 109th attempt.
"We talked about it and there are holes where he needs to aim away from the flag when he's got a 6-iron in his hand", Tillery said. His fortunes changed on the par-5 seventh, almost jarring his approach from 186 yards.
"I guess a low round used to be a 61 or a 62", McIlroy said. That distinction is held by The Ocean Course at Kiawah Island, officially 76 yards longer, but that track is essentially a links course, with bounce and roll helping players along....
Rickie Fowler tried to do his part.