The Flyers can't finalize their roster until they know the extent of Shayne Gostisbehere's injury.
Brian Elliott struggled in the nets as the Flyers lost to the Islanders and finished 3-2-3 in the preseason. They open the season Wednesday in San Jose.
Nothing is guaranteed, but Leier was on the fourth line at practice Saturday in Voorhees, an indication he will start the season with the Flyers.
In the June draft, the Flyers selected speedy center Morgan Frost with one of the first-round picks they received in the Brayden Schenn trade with St. Louis. They also received a conditional first-rounder in 2018, and that pick could be better than expected.
The Flyers need to make two roster cuts _ and they won't be easy decisions for general manager Ron Hextall.
The Flyers still have two roster cuts to make, but three rookies trying to earn spots will not be in the lineup Thursday night against Boston at the Wells Fargo Center.
"Trump threw sports into the middle of it," Flyers winger Wayne Simmonds said of the controversy during the national anthem.
The Flyers have to make two more rosters trims, and there is a chance that six rookies make the team, which would be a club record for the start of the season.
The Flyers raised their preseason record to 2-1-3 Tuesday with a 4-3 overtime win over the Rangers. Here are 10 observations.
Mammoth defenseman Sam Morin had a goal and was a physical presence in Tuesday's exhibition game against the Rangers.
Single-game ticket sales have been brisk as the rookie-laden Flyers prepare for the start of the season.
After a slow start, the Flyers' new line - Claude Giroux at left wing, with center Sean Couturier and Jake Voracek - played well in a 3-2 OT loss to the Rangers.
The rookie defenseman, who scored two goals Monday night, has become a leading contender to win a roster spot.
Center Nolan Patrick, 19, the No. 2 overall selection in the June draft, is making steady progress as he tries to earn a roster spot with the Flyers.
Flyers' goalies Michael Neuvirth and Brian Elliott have been sharp in camp, and they will get a chance to play a full game in the next two preseason contests.
If the preseason slashing and faceoff calls carry into the NHL's regular season, special teams will have heightened importance.
Giroux, one of the NHL's highest-scoring centers the last seven seasons, will make his debut at left wing on Monday.
The Flyers have 27 healthy players left in training camp, and they plan to carry 23 for the Oct. 4 opener in San Jose.