The Nets’ past week is a reminder of the NBA’s unpredictability. And how the hungrier team gets to eat.

They beat one of the league’s best teams, the Rockets, not once but twice — both times without Cam Johnson, no less. Then in his return Wednesday, they got routed by the worst team in basketball.

The Nets got outhustled, outworked and outplayed, 119-102, by cellar-dwelling Washington before a crowd of 16,035 at Barclays Center on Wednesday.

“Can you lose a game? For sure. Losing a game is not the problem. It’s how you play. It’s how you present yourself. And we’ve shown it, how competitive we can be,” coach Jordi Fernandez said. “Our focus was not there. And you can tell.”

The final score showed it. So did the eye test. And the stats.

The Nets allowed 54.3 percent shooting, and 20 of 43 from deep. They allowed seven in double figures against the worst team in the sport.

“[They] made too many 3s. Got into our paint too much,” said Cam Johnson, who finished with 17 points. “They just played harder than us today. Other games we played harder than our opponents. So that’s that.”

Trailing by just five roughly midway through the third quarter, the Nets conceded a 21-3 run that spanned into the fourth. This against a Washington team that had traded away Kyle Kuzma and Jonas Valanciunas on Wednesday, and without their replacements — Khris Middleton and Sidy Cissoko — suiting up at Barclays Center.

“We didn’t defend the whole game. It was not just in that stretch. We gave up 65 points in the first half,” Fernandez said. “For the whole game, our focus was bad. I think our guys tried to do the right things. We were not on time, our purpose, focus, everything we’ve had for us going well in the last three games. … I couldn’t see it [Wednesday]. And that didn’t allow us to fight for the game.”

Keon Johnson led the Nets with a game-high 25 points and six rebounds, but they got picked apart on the other end.

The Wizards started Richaun Holmes and four guards, and sliced up the Nets’ defense. Washington handed out 40 assists, with Bilal Coulibaly posting a triple-double (11 points, 11 assists and 10 rebounds).

Day’Ron Sharpe pulled the Nets within 75-70 with 5:32 left in the third quarter, but they quickly allowed a 21-3 blitz and never recovered.

Washington’s Bub Carrington capped the run with a 3-pointer that put the Nets down, 96-73, with 10:17 to play.

“Any time they’re shooting that well from 3, you’re putting yourself in a tough position,” Johnson said. “They get hot, at that point instead of being around five, we should be up 15. So yeah, 20 3s, 47 percent, that hurts.”

Before Fernandez had spent a single day with the Nets, he had shown his coaching chops with Team Canada. But now the Spaniard is reportedly stepping away from national team duty, though he respectfully declined comment.

Sportsnet Canada was the first to report the news that Fernandez has decided to step down as head coach of Team Canada and focus completely on the Nets. Fernandez refused to confirm the report before Wednesday’s game against Washington.

“No, because in fairness to Canada basketball, I want them to make the announcement,” Fernandez said. “And once they do, I’ll be able to answer all your questions.”

Fernandez has been Team Canada coach for the past two years, and acquitted himself well. He’s taken it from No. 15 in the FIBA World rankings to fifth, earning its first medal in the FIBA World Cup.

Team Canada qualified for its first Olympics since 2000, and after going undefeated in the group stage in Paris, fell to Victor Wembanyama and host France in the quarterfinals.