The Flyers dropped to the Bruins, 4-3, in preseason action Saturday night at Xfinity Mobile Arena.

Travis Sanheim, Nikita Grebenkin and Trevor Zegras provided the Flyers’ goals. The markers by Sanheim and Zegras came on the power play.

Matvei Michkov collected two assists. Zegras also had a helper to go along with his goal.

The Flyers are 1-3-0 in the preseason and have three games left.

• Grebenkin and Alex Bump both got another look in their push for a job with the big club.

Grebenkin took advantage of a second-period climb in the lineup, scoring his first goal of the preseason. The 22-year-old winger stood out in the pair of rookie games with a goal and two assists.

He played seven games for the Maple Leafs last season and has a legit shot to win a season-opening roster spot with the Flyers.

“He’s a sticky guy, he comes up with loose pucks, that’s what we need,” Rick Tocchet said. “He finds the pressure and he goes to it, he’s not shy. There are really good parts of his game. We’ve got to clean up some stuff, a lot of turnovers at the center ice he has got to clean up. Other than that, though, I thought he had a good game for us.”

Bump had a costly turnover in the final seconds of the first period.

The 21-year-old winger lost control of the puck right by his own net as he was trying to milk the clock to zero. John Beecher pounced on it and put it past Samuel Ersson with 0.6 seconds left.

“I just tried to settle the puck down,” Bump said. “Funny bounce on me, funny roll. Unfortunate, yeah, but whatever, it’s over now.”

A number of Flyers went up to support Bump before they headed down the tunnel to the locker room. After starting the game with Sean Couturier and Travis Konecny, Bump dropped down the lineup for the second and third periods.

“Listen, everybody has made mistakes like that,” Tocchet said. “You just move on from it, it’s not a big deal. He knows.”

Rodrigo Abols, a big forward who can play center or winger, suited up again. He’s the only skater to have played in all four preseason games so far. And he has earned it. The 29-year-old could be in the Flyers’ bottom six on opening night.

• Zegras gave the Flyers what they probably envisioned when they acquired him this summer in a trade with the Ducks.

In the second period, the 24-year-old center teamed up with Michkov for an impressive power play goal.

It was high-level playmaking that the Flyers have desperately needed on the man advantage. Michkov’s vision on his pass was excellent.

“He’s a guy that if we get people moving in the right areas, he’s going to find them,” Tocchet said.

More: How Zegras has bonded with Michkov over a game of ‘crossbar’

• Ersson started in net for the Flyers and played the full game, stopping 23 of 27 shots.

Jeffrey Viel snapped a 3-3 tie in the third period by waiting out Ersson on a move in close.

Ersson has made 30 saves on 36 shots through four periods of exhibition play.

• Jamie Drysdale looked confident and creative with the puck on his stick.

“He has been real assertive,” Tocchet said. “He’s trying to do stuff we want on the blue line. He’s doing some spin-o-ramas, he’s holding onto pucks, he’s doing some good stuff. … There’s a lot there, he’s a good player. He’s only going to get better.”

• The Flyers sent prospects Spencer Gill and Jack Nesbitt back to their respective junior clubs.

The club’s roster is down to 40, which includes injured players.

• Lou Nolan, the Flyers’ longtime public address announcer, paid tribute to the late Bernie Parent before the game.

The Flyers held a moment of silence for their all-time great goaltender, who died last Sunday at the age of 80.

• The Flyers and Bruins meet again Monday in preseason action at TD Garden (7 p.m. ET).