To understand the dedication and determination of football players from unbeaten Cleveland High, let’s review the commitment of backup quarterback Julio Avalos. He was so excited after guiding the Cavaliers to a 14-9 win over City Section power Birmingham that he spent all night watching film.

Asked what time he finally decided to go to sleep, Avalos said, “4 a.m.”

The entire offensive line eats together at lunch in the cafeteria.

“You see people hiding their food,” one lineman quipped.

They also get together on Thursdays for pasta night, where one player acknowledged eating “six to eight” chocolate chip cookies to close out a night of shared love for carbohydrates.

Then there’s the 34-year-old coach Mario Guzman. It’s been decades since a young coach armed with a teaching credential has pulled off the kind of breakthrough season in the City Section that Cleveland is enjoying, at a time when the City has lost such historic coaching figures as Robert Garrett, Angelo Gasca, Lorenzo Hernandez, Paul Knox and Mike Walsh.

Think back to 1992 when Troy Starr of Taft was 30 years old and took his team to the City 3-A final after a winless 1991 season.

If Cleveland (7-0) wins out and captures the West Valley League title, the Cavaliers likely will receive the No. 2 seeding behind defending champion Carson in the City Section Open Division playoffs. Cleveland never plays in the Open Division.

“I told him, ‘Good luck, baby,’” Birmingham coach Jim Rose said of his message to Guzman.

“They have 30 seniors. That’s a huge help,” Rose said. “He’s got his guys believing in what they do as a program. Their identity is to pound the ball on offense. The first two series, we gave up touchdowns. One thing about Cleveland is they always get athletes, but they put it together this season. He’s got enough big guys and enough speed to get it going.”

Cleveland also went on the road to beat another City power, Crenshaw, 24-18. Each win came with Avalos at quarterback, replacing the injured Domenik Fuentes. Avalos normally plays receiver, but he had to fill in last season when Fuentes got hurt before returning for the playoffs.

Cleveland’s offensive line has been a strength, including, from left, right tackle Carlos Gomez, right guard Carter Fitzgerald, center Pedro Castaneda, center Adam Garbisch, left guard Jovanni Orellana and left tackle Josue Fonseca.

(Eric Sondheimer / Los Angeles Times )

Guzman was caught by surprise last season when he didn’t prepare for losing Fuentes, so all summer, he vowed to never again to be without a fully ready backup quarterback. Fuentes returned on Friday night to pass for 208 yards and three touchdowns in a 37-20 win over El Camino Real.

Cleveland has multiple running backs, led by Moyosoreoluwa Odebunmi. The defense features middle linebacker Joseph Hurtado, who Rose said is impressive as a tackler.

Guzman is a third-year coach who was an assistant under former coach Peter Gunny. Guzman graduated from Grant and served as an assistant there for several years while going to Valley College, Cal State Northridge and National University to gain a teaching credential. His wife, Elizabeth, helps out with her cooking skills during preseason practices. She’s a prekindergarten teacher for ages 4 and 5, which means she has lots of patience.

“She was fired up,” Guzman said about the Birmingham game. “She wanted a headset.”

Oluwafemi Okelola, who’s been in Cleveland’s program for four years, said of Guzman, “He loves us outside of sports. He checks on you. You want to go the extra mile for him.”

Discipline has been big for Guzman, whether that means players show up to weight training wearing all black or making sure they never walk when heading to the practice field.

Guzman also has integrity. He’s the last adult to leave Cleveland after games. Sometimes it takes until nearly midnight for the final player to be picked up by a parent. Guzman waits with him. Yes, it would be easy for Guzman to give the player a ride home, but that’s against Los Angeles Unified School District rules for teachers and coaches.

“All you can do is watch,” Guzman said.

The players have placed their trust in Guzman, as have parents. He’s delivering.