As the Warriors prepared to play their final exhibition game of the 2019-20 season Friday night, Juan Toscano-Anderson made sure to soak up every moment.

He used his locker proximity next to Stephen Curry to ask a couple more of the “one million” things he wanted to know, watched as Draymond Green’s intensity amplified just before the opening tip, and made sure to look into the crowd to find where his family was sitting at Chase Center.

“It’s been an opportunity of a lifetime,” said Toscano-Anderson, a 26-year-old forward from Oakland. “I’m very grateful that I was given the opportunity to wear this jersey. It’s meant a lot to me and my family. It’s something I’ll tell my kids and grandchildren about and talk about for the rest of my life. I’ll never forget this opportunity.”

At least for the immediate future, the opportunity is probably about to end for the boyhood Warriors fan who improved his game so much that he earned a training camp invitation. When Golden State trims its roster to the opening night group, Toscano-Anderson will likely be waived.

But with an exhibit 10 clause in his contract, he can receive a monetary bonus for reporting to the franchise’s G League team in Santa Cruz and staying there for at least 60 days. It appears as though he’s made enough of an impression on the Warriors that they want to keep him in the organization.

“He’s a very instinctive basketball player,” head coach Steve Kerr said. “He just gets it. He sees the game. … He understands what’s happening on the floor before most players do. He’s got great feel defensively and great energy and heart. He cuts hard and plays with good pace.

“He’s really a good basketball player.”

This is a remarkable scouting report for Toscano-Anderson, who grew up in East Oakland and wears jersey No. 95 in honor of his grandmother moving here from Mexico and starting a life for the family on 95th Avenue.

Toscano-Anderson’s family was full of Warriors fans for as long as he can remember, going to games for a $10 price that included a soda and a hot dog. He has memories of watching Mookie Blaylock and getting cornrows to mimic the look of Larry Hughes.

But Toscano-Anderson, who grew up playing soccer, didn’t even own his first basketball until the third grade. That’s when he transferred to Montclair Elementary and met teacher Wilhelmina Attles, the wife of legendary Warriors player, coach and ambassador Al Attles.

She got Toscano-Anderson into a Warriors youth basketball camp, and his life was forever altered. Toscano-Anderson fell in love with the game, starred at Castro Valley High and earned a scholarship to Marquette.

Dealing with injuries and being forced to play center after sitting behind 10th-year pro Jae Crowder, Toscano-Anderson averaged only 3.8 points and 3.3 rebounds in college. He didn’t even enter his name into the 2015 NBA Draft pool, but he wasn’t done with the game. He went to Mexico and started a career that is still revered in the country.

During four seasons with Fuerza Regia de Monterrey in the Mexican league, Toscano became a household name. He was a two-time All-Star, a dunk champ and the 2017-18 MVP. He couldn’t walk to a café or move between airport gates without seeing his jersey worn by a fan.

“In a very humble way, I wanted more,” he said. “I believe I have skills that translate to the NBA.”

He earned a spot in Santa Cruz as a tryout player in 2018 and worked his way from a seldom-used reserve to a key player who averaged seven points and 6.8 rebounds on a playoff squad. Adding to his defense, energy and locker-room presence, Toscano-Anderson made the Golden State Warriors’ summer league team and was invited to training camp.

His family mocks him for repeatedly calling the situation “cool,” but he gets so excited that it sometimes stunts his extensive lexicon. Playing for Kerr, with Curry and Green, and in front of his family is like “childhood dreams of having free rein in a candy store.”

“I’m trying to make every day stretch into feeling like a week or two,” he said.

Toscano-Anderson already has plans for decades to come. Often a guest speaker and coach at many Warriors youth camps, he wants to finish his NBA chase before playing a couple more years in Mexico.

Then he wants to own a Mexican team and act as the franchise’s general manager as he simultaneously opens a youth academy to grow basketball’s roots in the soccer-crazed country. Of course, all of that will have to wait on his present plans.

“The worst case scenario is me going back to Santa Cruz. I won’t be mad at that,” he said. “That will just tell me that I have more work to do and have to go back to the drawing board.

“I’ll work on my jumper and handles, whatever it takes to get back into this uniform.”

Rusty Simmons is a San Francisco Chronicle staff writer. Email: rsimmons@sfchronicle.com Twitter: @Rusty_SFChron