The Flyers on Saturday night looked like a team playing the second game of a back-to-back set against a Stanley Cup contender.

They were rolled by the Stars, 5-1, Saturday night at American Airlines Center in Dallas. On Friday night, the Flyers had to go the distance to pick up a 6-5 shootout win over the Blues in St. Louis.

The Flyers (9-6-3) had their point streak halted at five games (3-0-2).

Since last season, the Flyers have gone a staggering 1-12-2 in the second game of back-to-back sets and have been outscored 63-34.

Christian Dvorak recorded the Flyers’ lone goal.

Jason Robertson scored a hat trick for the Stars (12-4-3), who are a bona-fide top team. They won their fifth straight.

• Dan Vladar, who entered with a 2.15 goals-against average and .919 save percentage, denied 23 of 28 shots.

The 28-year-old battled, but Dallas was just too much.

Robertson, a two-time 40-plus goal scorer, struck twice in the second period. He completed the natural hat trick on the power play in the final stanza as the Stars’ lead ballooned to 4-0.

The recent trend of poor starts continued for the Flyers. They surrendered a goal 3:48 minutes into the action and have been outscored 7-1 in the first period over the last five games.

Lian Bichsel’s game-opening marker came on a shot that went off Bobby Brink as the Flyers were scrambling in the defensive zone. Dallas went into first intermission with a 10-3 shot advantage and it felt like the Flyers were fortunate to be down only 1-0.

The Flyers found their legs a bit in the second period, but Jake Oettinger didn’t budge. The Stars’ netminder stopped 20 of 21 shots on the night.

In the middle stanza, he denied good looks from Owen Tippett and Matvei Michkov before Robertson struck for his first goal to cushion Dallas’ advantage to 2-0.

Oettinger improved to 5-1-0 lifetime against the Flyers.

• Dvorak, Tippett and Trevor Zegras combined for a goal and an assist.

It wasn’t quite what they did Friday night when they combined for five goals and five assists.

The Flyers’ top line of Michkov, Sean Couturier and Travis Konecny was scored on twice in that decisive second period.

Michkov finished with a team-high five shots.

• After playing three times in the last four days, the Flyers now go four days before they have their next game Thursday at home against the Blues (7 p.m. ET/NBCSP).