LOS GATOS — Fire hoses still on the ground around him Monday morning, Darin Devincenzi surveyed the extensive damage to the popular restaurant that bears his and his brother’s initials.

The night before, Double D’s Sports Grille was buzzing with dozens of Warrior fans who watched the team win a crucial playoff game against the Houston Rockets. But then fire erupted after the restaurant closed.

As Devincenzi stood outside with some of his employees, he admitted, “It gets a little emotional.”

“We’ve got to rebuild,” he said.

Devincenzi credits firefighters for salvaging his collection of sports memorabilia that adorned the walls of Double D’s, including signed jerseys and photographs. Some of his personal favorites include items from Joe Thornton, Stephen Curry and Michael Jordan.

“The firefighters were awesome, a good job by these guys,” said Devincenzi, who has owned and operated the restaurant with his brother, Dean, for almost 20 years. “There’s nothing super valuable, but it’s valuable to me.”

The blaze, reported at 11:41 p.m., was contained to the attic and had probably burned for some time before being detected, according to the Santa Clara County Fire Department.

Extinguishing the blaze proved to be difficult as firefighters encountered three roofs while attempting to cut holes on top of the structure in order to let hot gases out, according to a Fire Department official.

The cause of the fire, which was under control at 1:50 a.m., was the improper storage of cleaning supplies, paper towels and electrical equipment in a water heater close, fire officials said. .

Darin Devincenzi received a call around midnight and rushed down to the restaurant, located on Santa Cruz Avenue. Once he arrived, Devincenzi stood and watched as flames shot through the roof.

“The emotions didn’t quite set in last night because we were in such shock,” Devincenzi. “You don’t know what to even do or what to think.”

Bryan Kiefel, who owns a gas station across the street, counts himself as one of Double D’s many regular customers. He said the closure of Double D’s, for however long, will be a loss for the Los Gatos community.

“It’s shame,” Kiefel said. “These guys have been here for a long time. They do a fantastic job and are really supportive of the community.”

Devincenzi laments the timing of the blaze, considering both the Sharks and Warriors are in the midst of playoff runs.

“We’re big Warriors fans and Sharks fans,” he said. “It’s a big time for us, a fun time of year. This is why we do this.”

Contact Mark Gomez at 408-920-5869 and follow him at Twitter.com/MarkMgomez.