Patrick Coan is leading Sayville onward to victory.

The senior quarterback, whose cousin is former Notre Dame QB Jack Coan, is enjoying an undefeated season with his Golden Flashes as they attempt to go to 6-0 with a win against rival Westhampton this weekend.

“Every day is just a blast. Going out there, playing football, and having fun with your dogs,” Coan, 17, told The Post of his teammates.

Sayville, which went undefeated last year until a crushing 31-28 loss to juggernaut Garden City in the Long Island title game, has a chip on its shoulder to get the job done this year.

“We just reloaded with a great new group of guys, and we’re all ready to play football,” added the Lehigh commit. “We’re just balling right now, and hoping to keep that going.”

Patrick Coan has led Sayvville High School to a 5-0 start this season. Coan family photo

Jack, now playing with the Saskatchewan Roughriders in the CFL, has always been close with Patrick, showed him the ropes ahead of his senior year and continues to be a mentor.

“We go down to the field and he teaches me footwork, reads, progressions, and everything. Every morning on the weekends, we’d go down to the field, even when it’s cold or warm,” said Patrick.

“He’s definitely a great trainer and a great mentor. He teaches the game very well.”

Quarterback Jack Coan, who is Patrick Coan’s cousin, formerly played for Notre Dame and is now with the Saskatchewan Roughriders in the CFL AP

The older Coan, a class of 2017 grad who led the Flashes to an LI championship win in 2015 before playing at Wisconsin and later ND, is paying it forward to the entire varsity squad, too.

“Saskatchewan was on a bye, and he had flown into town, and he sent me a text, ‘Hey, I’d love to come to practice,’ ” said head coach Robert Hoss, who has coached both of the cousins.

“He said to me, ‘Hey, Coach, can you add me to your Hudl account? I’d love to watch practice and games… He wants to wear Sayville football gear. It’s really cool, and our kids love to see that.’”

Patrick Coan throws a pass during a recent Sayville game. Coan family photo

Patrick, in particular, is being motivated by the family presence that’s shaking down the thunder on the South Shore, according to his coach.

“There’s no doubt Patrick knows Jack is watching, and he is the ultimate positive guy. Even if he was going to give Patrick constructive feedback, it would always be in a positive way,” Hoss said.

“Having that connection, he can walk him through certain things … and I think that’s helped Patrick tremendously.”

Now, the sights are set on the Flashes rewriting the script in what will be the younger Coan’s last dance in Sayville.

“We don’t really focus on like the whole pressure thing,” Patrick said. “It’s just going out there having fun and playing football, which we all love to do.”