It's that time of the year again: playoff time.
While the AHL and NHL playoffs are still a few weeks away, junior hockey leagues like that of the OHL and WHL will be kicking off their respective postseason campaigns over the course of the weekend.
As such playoff games get underway, Buffalo Sabres prospects like defenseman Radim Mrtka of the Seattle Thunderbirds will have the chance to earn big-game experience.
Let's take a look at Mrtka's play specifically, and analyze his opportunity to make an impact as his team opens up 2026 WHL postseason play.
What does the first round of the WHL playoffs look like for Seattle?
The Thunderbirds will enter the WHL playoffs as the Western Conference's No. 7 seed. Their first-round opponent will be the conference's second-place Penticton Vees, who finished their inaugural WHL campaign as the winners of the B.C. Division while setting the record for the most wins tallied by a CHL team during its first season.
In terms of the season-series contested between the two teams, things didn't exactly go the way of the Thunderbirds. All four head-to-head matchups saw Penticton claim victory, with two of the matchups being decided by more than two goals. Seattle would claim their lone point of the series in a 5-4 shootout loss that opened the month of February.
It's also worth noting that the Vees dominated the Thunderbirds in every major statistical category during the 2025-26 regular season.
What did Mrtka's season look like? What would a strong series look like?
Since joining the Thunderbirds from the AHL's Rochester Americans, Mrtka has led the team's defense when it comes to offensive production. Despite recording one goal in his 43 games played, he has recorded 33 assists over the same timeframe; together, that's 34 points on the season and a points-per-game pace of 0.79.
It's worth noting that Mrtka finished the campaign one point shy of his point total from the 2024-25 season, which he achieved over the same number of games.
In a general sense, Mrtka is a player who is capable at starting offensive pushes and controlling the space required to win puck battles and maintain possession. While those are things that are demonstrated by Sabres defensemen like Rasmus Dahlin and Mattias Samuelsson, the defensive unit as a whole may require reinforcements very soon if it is to continue supporting the offense in creating chances. Both Luke Schenn and Logan Stanley are scheduled to hit free agency at the end of the season, while Bowen Byram is eligible for an extension this offseason. It's also worth noting that Michael Kesselring is going to be heading to restricted free agency when the calendar flips to July.
Add on the fact that Conor Timmins will be hitting free agency after next season and you only have three defensemen who are locked into long-term contracts: Dahlin, Samuelsson and Owen Power.
As a result, Mrtka could very well serve as a contender for a spot with the Sabres as soon as next season. He's currently tied to an entry-level deal that takes him to the end of the 2027-28 campaign, and his cap hit would be considerably less than the one held by someone like Timmins.
If Seattle is to have any chance at stealing a game or two from Penticton, the onus will once again be on Mrtka to lead the blue line and help forwards like Cameron Schmidt get the puck towards the net. In terms of offensive production, the bare minimum that Mrtka needs to provide should be equivalent to the three assists he recorded during the Thunderbirds' six-game stint in the 2025 postseason.
That said, Mrtka's chances at a roster spot would increase if he found a way to improve on that tally and help Seattle win at least two or three games against a strong Penticton side.