04/24/2016 10:01 EDT | Updated 04/25/2017 01:12 EDT

NHL playoffs: What you need to know for Sunday

The Stanley Cup playoffs are on. Each day, we'll keep you updated on the important news involving players, starting lineups, injuries and more. Check back throughout the day to stay in the know.

Bjugstad questionable for Panthers

The Florida Panthers could be minus a key forward for Sunday's must-win game against the hometown New York Islanders at 7 p.m. ET.

Second-line centre Nick Bjugstad didn't travel with the team to Liberty Airport in Newark, N.J., after going face-first into the boards after contact with New York left-winger Shane Prince in Friday's 2-1 overtime loss.

Bjugstad, 23, is fourth on the Panthers in playoff scoring with six points in five games and second only to linemate Reilly Smith (plus-7 rating) at plus-6. If Bjugstad can't play, expect Vincent Trocheck to skate between Jussi Jokinen and Smith.

Injured Orpik travels with Caps

It's highly unlikely Brooks Orpik would return for Sunday's Game 6 against the hometown Flyers at noon ET, but the Washington defenceman did make the trip to Philadelphia.

"It's very encouraging, yes," Capitals head coach Barry Trotz told reporters Saturday. "He's feeling much better."

Orpik hasn't played since being helped off the ice with an upper-body injury after Flyers forward Ryan White hit him into the boards in Game 3. Some believe the stay-at-home blue-liner has a concussion, an injury that cost Orpik eight games in 2013.

Seguin ruled out for Game 6

Tyler Seguin will not return to the ice Sunday afternoon as the Dallas Stars make a second attempt to clinch their first-round series against Minnesota.

A lower-body injury will keep the all-star centre out of the lineup for Game 6 at Xcel Energy Center (3 p.m. ET). Seguin played Game 2 after missing a month with a slight cut of his left Achilles tendon but hasn't been on the ice since.

While the Stars, with a 3-2 lead in the best-of-seven Western Conference quarter-final, have scored 14 goals in the four games without Seguin, they would much prefer to have the player who scored 33 goals and 73 points in the regular season in the lineup.

Lehtonen back in net?

Don't be surprised if Dallas coach Lindy Ruff gives Kari Lehtonen the nod in goal Sunday evening.

Antti Niemi yielded five goals on 24 shots in a 5-4 overtime loss in Game 5 on Friday.

Lehtonen allowed just one goal in the first two games of the Western Conference quarter-final (1.69 goals-against average, .931 save percentage) before he gave up five goals in Game 3 and sat on the bench the next two contests.