There was no need for the dry-erase board.
Alli Campbell and her Bellwood-Antis (Bellwood, Pennsylvania) teammates knew well the play that was called.
To set the scene: The Bellwood-Antis Blue Devils trailed West Catholic (Philadelphia) 39-37 with 2:27 left in the fourth quarter of the Class 2A state final on March 22 at the Giant Center in Hershey, Pennsylvania.
During a timeout, coach Jim Swaney called for Campbell -- who already had scored 26 points -- to use two screens, moving from the right side of the court to the left corner for a 3-point shot.
Campbell, though, had another idea.
Just a sophomore, Campbell suggested that she should use the first screen but fake going through the second. Instead, she would race back to the right corner for a 3.
"I knew the defender was overplaying me," said Campbell, a 6-foot point guard and the No. 15 prospect in the espnW HoopGurlz Terrific 25 for the Class of 2020. "I knew that if I would continue [through the second screen], she would be right there waiting for me.
"I didn't hesitate to [suggest a change]. I knew Coach would trust me."
Swaney, a veteran coach at age 61, took Campbell's advice.
"We run a program where everyone's input is taken in," Swaney said. "We have smart kids."
Swaney's faith in Campbell -- both her playcalling and her shot-making -- was vindicated. After the timeout, Campbell ran her play, took a pass from Riley D'Angelo and swished a 3-pointer from the right corner.
Campbell was wide open.
"I knew it would work," said Tina Holley, who set the screen to free Campbell. "It was genius."
Campbell, who carries a 4.32 GPA, has never received anything less than an A in a quarterly grade. A math whiz, she is the No. 1 student in her school's sophomore class and hopes to be valedictorian. She is being recruited by numerous top-25 basketball schools but will not rule out the Ivy League, either.
"She's fierce when it comes to doing well on exams and studying," said Campbell's mother, Erin. "She's competitive in everything. Failure's not an option."
Campbell, the middle of three sisters, does not come from a sports background. Neither of her parents played basketball.
When she was in first grade, her parents, Erin and Travis, found out about a local rec center starting a winter basketball league for beginners and asked their daughter if she wanted to try the sport.
Campbell said yes, and, because of her height, coaches stuck her under the basket. By the third grade, however, Campbell had started to tear up older competition -- fifth- and sixth-graders.
Her first scholarship offer came from Monmouth University in October 2016, and she was an immediate varsity starter that year as a freshman. She made second-team all-state, averaging 17.6 points, 6.4 rebounds, 3.2 steals, 2.9 assists and 1.2 blocks.
She was even better as a sophomore, winning the Pennsylvania Gatorade Player of the Year honor, averaging 26.4 points, 8.2 rebounds, 5.1 assists, 4.1 steals and 1.7 blocks.
"I'm still trying to find something she's not good at," Swaney said. "I go into every game knowing I have the best player on the floor."
That was the case in the state final. Campbell finished with 34 points, eight rebounds, two assists and two steals. She shot 10-of-18 from the field, including 4-of-6 on 3-pointers. She made 10 of her 11 free throw attempts. Of the Blue Devils' 25 second-half points, Campbell had 24.
After she suggested altering Swaney's play, the Blue Devils never trailed again en route to the first state title in program history.
During the medal ceremony, fans at the Giant Center serenaded her with chants of "MVP! MVP!"
When the team returned to Bellwood -- a small central Pennsylvania town 8 miles from Altoona and 35 miles from Penn State University -- they got a hero's welcome.
"It took us an hour and a half to go the last five or six miles," Swaney said. "There were fire trucks, police and people lined up along the road. It's a memory these kids will have the rest of their lives."
Next up could be another special memory for Campbell, who will attempt to make the USA U17 team this week in Colorado. A 12-person roster will be announced May 30, and the team is scheduled to compete at the FIBA U17 World Cup in July in Minsk, Belarus.
"Words can't describe how I would feel if I made the team and could represent not only my area but also my country," Campbell said. "It would be such an honor."