Inside the garage of his family home, Ray Cooper Jr. sits quietly and observes.

Half of the concrete flooring is protected by wrestling mats that he wipes down before the start of the workout.

There are treadmills where a second car might otherwise fit. To get from the door leading to the house to the mats, you have to dodge a variety of workout equipment, including punching bags hanging from the ceiling.

It is this garage that the eldest son, Ray Cooper III, enters first. Slowly, three of his brothers — Blake, Baylen and then Makoa — make their way in before the first bell goes off.

Even Makana-Ray, the lone daughter of six, who is a sophomore at Pearl City, makes an appearance.

The bell sounds and practice begins as Ray Cooper Jr. sits there, watching intently as his sons take turns taking each other down.

It is in this garage where, for as long as the oldest Cooper son can remember, all of the training has taken place.

It is this garage that has produced eight high school state wrestling titles and an NAIA national championship over a nine-year span.

And it is this garage that in two days, could produce its first millionaire.

Ray Cooper III, who goes by “Braddah” to the rest of his family, will compete in the main event of the 2018 PFL Championships at the Hulu Theater at Madison Square Garden on Monday night. The fight will be broadcast live in Hawaii at approximately 6:15 p.m. on NBC Sports Network.

By the time the ball drops nearby in Times Square, Cooper III could be cashing a $1 million check for winning an eight-man welterweight playoff tournament.

Cooper III, the No. 1 seed, scored three straight first-round TKO victories to reach the 170-pound final against Russia’s Magomed Magomedkerimov, the No. 3 seed. His impressive performances locked him in as the main event fight of the evening.

After 22 professional bouts with 17 victories, including the fastest knockout in PFL history (18 seconds), Cooper acknowledges his entire life could change with one more win.

“The whole goal for me was to be the best and fight the top guys, and this is just the beginning of my fighting career,” Cooper said last week before leaving for the East Coast.

Formerly known as World Series of Fighting, it was renamed the Professional Fighters League in 2017 under new ownership. A regular season and playoff tournament was created in six different weight classes, with all six winners crowned on the same New Year’s Eve card inside one of the most famous arenas in the world.

The tournament format was perfect for Cooper, whose last name is wrestling royalty in the islands.

The four sons have combined for eight individual state wrestling titles at Pearl City, with Ray and Blake each winning three.

“Everything I do is here,” Ray Cooper III said. “I don’t go to no gyms. I don’t believe in big gyms. I feel it’s overrated.”

With all four sons out of high school, they have helped Cooper prepare for the final and will all be in his corner, along with Makana-Ray.

It’s a family affair that has left their father, a former professional fighter himself, occasionally at a loss for words.

“I just trained my kids from when they were small to wrestle. That was their goal, to go to college and wrestle,” the soft-spoken family matriarch said. “It’s just worked out this way.”

He fought for just over a decade, primarily in Hawaii, and faced notable names that include Frank Trigg, Hermes Franca, Jake Shields and Masanori Suda.

But even a fighter with more than 20 career bouts never imagined he’d be sitting in his garage one day watching four of his sons together preparing for a prize fight.

“When they was growing up, I thought I was making a mistake of keeping them close. I wouldn’t let them go out and sleep at their friends’ houses. They would always be together,” Ray Cooper Jr. said. “Later on I worried I was making a mistake, but looking back now … it’s working out.

“Nothing like I planned it. I never planned this to happen. I just wanted them to wrestle, go to college, get a degree, the dream everyone talks about.”

The dream is an entirely new one now. Ray Cooper III made his pro debut with an eight-second knockout in July 2012 at Blaisdell Arena. He’s won via stoppage in all 17 of his victories (12 KO/TKOs, five submissions) but never had a major opportunity in the sport until he was given the opportunity to beat Shields, a man his father fought twice, in the PFL.

Cooper scored a TKO of Shields in July to earn the No. 1 seed in the tournament and beat him again on the way to the final.

All that is left now is taking down Magomedkerimov, who is undefeated in the PFL and 22-5 overall.

“(My brothers) push me every day. They all got different styles, so I see everything,” Cooper said. “We know what it takes to train hard and win championships, and this is the next one.”

Penn makes weight

Former two-division UFC world champion B.J. Penn made weight at 156 pounds for his lightweight fight against Ryan Hall on the prelims of tonight’s UFC 232 pay-per-view in Inglewood, Calif.

Penn (16-12-2, 12-11-2 UFC) has won one bout in the past nine years and is on a five-fight losing streak since a draw against Jon Fitch in 2011.

Hall (6-1, 2-0), who weighed in at 155 pounds, won season 22 of the Ultimate Fighter in 2015 and has fought once since, beating Gray Maynard by unanimous decision in December 2016.

It will be the first televised prelim on Fox Sports 1 beginning at 3 p.m.