| Date | Team | Transaction | |
|---|---|---|---|
| Mar 14, 2026 | Ottawa Senators | Recalled from AHL | |
| Nov 22, 2025 | Ottawa Senators | Assigned to AHL | |
| Nov 18, 2025 | Ottawa Senators | Recalled from AHL | |
| Oct 6, 2025 | Ottawa Senators | Cleared Waivers | |
| Oct 5, 2025 | Ottawa Senators | Placed on Waivers | |
| Jun 15, 2025 | Ottawa Senators | Signed 1 year @ $775K AAV starting in 2025-26 | |
| Jul 15, 2019 | Ottawa Senators | Signed to an entry level contract. |
URL: https://thestanleycap.com/cdn/player_cards/20252026/lassi-thomson-8481575.png
Player cards present an infographic of a players performance using a series of Player Archetypes developed for Puckalytics.com and TheStanleyCap.com. The boxes in the rink image show the archetype ratings for the season specified in the card while the graphs to the right show the five-year trends for those archetypes.
Except for Faceoffs, the values shown are the players z-score (standard deviation from the mean) for the specific metric used to calculate the archetype values. When calculating z-scores forwards were compared to forwards and defensemen were compared to defensemen. Positive values indicate the player is above average and shaded in blue, while negative values indicate the player is below average and shaded in pink. The five year trend charts show a range of -4.0 to 4.0.
The value shown for Faceoffs is the faceoff winning percentage rather than their z-score with winning percentages below 50 in pink shades and above 50 in blue shades.
All archetypes are 5v5 except 5v4 TOI, 4v5 TOI, Skating (even strength) and Faceoffs (all situations). Archetypes use regular season data only.
You are free to use include player cards in written articles, share on social media, or on other public websites under the following conditions:
Note: Player cards will update daily throughout the season so if you want to include snapshot then you must download the image.
If you have any questions, send an e-mail to the e-mail address at the top of this page.
Read Introducing Player Archetypes on HockeyAnalysis.com for more details on archetype calculations.
| Season | Team(s) | GP | TOI | Producer | Playmaker | Shooter | Sniper | Rebound | Rush | Skating | Defend |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021-22 | OTT | 16 | 0.68 | 3.06 | -1.00 | -1.38 | - | -1.07 | 1.22 | -4.62 | |
| 2022-23 | OTT | 2 | - | - | - | -3.37 | - | -0.89 | -1.55 | -7.67 | |
| 2025-26 | OTT | 11 | -0.64 | 0.26 | -0.95 | -1.62 | - | 7.06 | 0.60 | 2.60 |
| Season | Team(s) | GP | TOI | 5v5 TOI | 5v4 TOI | 4v5 TOI | Possession | Drive | Suppress | Faceoffs |
|---|---|---|---|---|---|---|---|---|---|---|
| 2021-22 | OTT | 16 | -0.77 | -0.49 | -1.57 | 0.70 | 0.22 | -0.95 | - | |
| 2022-23 | OTT | 2 | -2.11 | -1.34 | -2.21 | -5.17 | -4.96 | 3.77 | - | |
| 2025-26 | OTT | 11 | -1.83 | -1.03 | -1.90 | 0.61 | 0.38 | -0.56 | - |
Player archetypes are a look at a players strengths and weaknesses in his game when compared to other players around the leeague. Except for Faceoffs, the values shown are the players z-score (standard deviation from the mean) for the specific metric used to calculate the archetype values. When calculating z-scores forwards were compared to forwards and defensemen were compared to defensemen. Positive values indicate the player is above average and shaded in blue, while negative values indicate the player is below average and shaded in pink. The five year trend charts show a range of -4.0 to 4.0.
The value shown for Faceoffs is the faceoff winning percentage rather than their z-score with winning percentages below 50 in pink shades and above 50 in blue shades.
All archetypes are 5v5 except 5v4 TOI, 4v5 TOI and Faceoffs (all situations). Archetypes use regular season data only.
Read Introducing Player Archetypes on HockeyAnalysis.com for more details on archetype calculations.
| Season | Team(s) | GP | TOI | G/60 | A/60 | Pts/60 | xG/60 | GAE/60 | Sh% | xSh% | Sh%AE | %SA Rush | %SA Reb. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021-22 | OTT | 16 | 220:44 | 0.00 | 1.09 | 1.09 | 0.08 | -0.08 | 0.00 | 3.67 | -3.67 | 0.00 | 0.00 |
| 2022-23 | OTT | 2 | 21:36 | 0.00 | 0.00 | 0.00 | 0.23 | -0.23 | 0.00 | 8.44 | -8.44 | 0.00 | 0.00 |
| 2025-26 | OTT | 11 | 139:14 | 0.00 | 0.86 | 0.86 | 0.18 | -0.18 | 0.00 | 4.60 | -4.60 | 6.25 | 0.00 |
| Season | Team(s) | GP | TOI | SAF/60 | GF/60 | xGF/60 | SAA/60 | GA/60 | xGA/60 | GF% | xGF% | xGF Rel | xGA Rel | xGF% Rel |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021-22 | OTT | 16 | 220:44 | 41.32 | 2.72 | 2.41 | 42.68 | 4.35 | 2.69 | 38.46 | 47.24 | -0.01 | -0.10 | 0.86 |
| 2022-23 | OTT | 2 | 21:36 | 41.67 | 0.00 | 1.99 | 44.44 | 5.56 | 2.61 | 0.00 | 43.34 | -1.67 | 0.68 | -22.12 |
| 2025-26 | OTT | 11 | 139:14 | 41.80 | 3.45 | 2.64 | 37.06 | 1.72 | 2.06 | 66.67 | 56.22 | 0.14 | -0.34 | 5.12 |
| Skating | Shooting | Zone Time | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | GP | Top Speed | Bursts>20/mi | Avg. Speed | ES Avg. Speed | Top Speed | Avg. Speed | %Long Range | %Mid Range | %High Danger | ES DZ% | ES NZ% | ES OZ% |
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| Percentile 0-25 | Percentile 25-50 | Percentile 50-75 | Percentile 75-100 |
| Season | Teammate | Team | TOI | GF/60 | GA/60 | GF% | xGF/60 | xGA/60 | xGF% | xGF Rel | xGA Rel | xGF% Rel |
|---|
| Type | Statistic | Definition |
|---|---|---|
| Individual | G/60 | Goals Against per 60 minutes. |
| Individual | A/60 | Assists per 60 minutes. |
| Individual | Pts/60 | Points per 60 minutes. |
| Individual | xG/60 | Expected Goals per 60 minutes. |
| Individual | GAE/60 | Goals Above Expected (G/60 - xG/60). |
| Individual | Sh% | Shooting Percentage. |
| Individual | xSh% | Expected Shooting Percentage. |
| Individual | Sh%AE | Shooting percentage above expected (Sh% - xSh%). |
| Individual | %SA Rush | Percentage of shot attempts determined to be on the rush. |
| Individual | %SA Reb. | Percentage of shot attempts determined to be from rebounds. |
| On Ice | SAF/60 | Shot Attempts For per 60 minutes. |
| On Ice | GF/60 | Goals For per 60 minutes. |
| On Ice | xGF/60 | Expected Goals For per 60 minutes. |
| On Ice | SAA/60 | Shot Attempts Against per 60 minutes (lower is better). |
| On Ice | GA/60 | Goals Against per 60 minutes (lower is better). |
| On Ice | xGA/60 | Expected Goals Against per 60 minutes (lower is better). |
| On Ice | GF% | Goals For Percentage = Goals For / (Goals For + Goals Against) |
| On Ice | xGF% | Expected Goals For Percentage = Expected Goals For / (Expected Goals For + Expected Goals Against) |
| On Ice | xGF Rel | xGF/60 when On Ice - xGF/60 when not On Ice. |
| On Ice | xGA Rel | xGA/60 when On Ice - xGA/60 when not On Ice (lower is better). |
| On Ice | xGF% Rel | xGF% when On Ice - xGF% when not On Ice. |
Senators’ Treatment of Lassi Thomson Hints at Bigger Issues at The Hockey Writers (Mon May 11, 2026)
Lassi Thomson signs with HC Lugano at SenShot (Sat May 9, 2026)
Pending UFA Lassi Thomson Embraces Late-Season Opportunities In Ottawa at Yahoo Sports NHL (Thu Apr 23, 2026)
Down to 4 defensemen, Senators hold the Rangers to the fewest shots by an NHL team since 2003 at Yahoo Sports NHL (Tue Mar 24, 2026)
Senators boost their playoff push by beating the Rangers 2-1 at Yahoo Sports NHL (Mon Mar 23, 2026)
Senators Defenseman Lassi Thomson To Play First NHL Game Since 2022: 'It's A Pretty Cool Moment For Me:' at Yahoo Sports NHL (Mon Mar 23, 2026)
Should The Senators Circle Back On AHL Defense Goal Scoring Leader Lassi Thomson? at Yahoo Sports NHL (Thu Feb 19, 2026)
Senators Recall Stephen Halliday, Lassi Thomson Ahead of 7-Game Trip at The Hockey Writers (Tue Nov 18, 2025)
Ottawa Senators Top 25 Under 25, #19: Lassi Thomson Returns to North America at Silver Seven Sens (Mon Aug 11, 2025)
Lassi Thomson signed a $775,000 1-year contract with the Ottawa Senators and General Manager Steve Staios on June 15, 2025 with an AAV of $775,000. This contract will start in 2025-26 and end after the 2025-26 season. In the first season of the contract the cap hit was equivalent to 0.81% of the salary cap.
Lassi Thomson signed a $2,775,000 3-year contract with the Ottawa Senators and General Manager Pierre Dorion on July 15, 2019 with an AAV of $925,000. This contract will start in 2019-20 and end after the 2023-24 season. In the first season of the contract the cap hit was equivalent to 1.13% of the salary cap.
| Season | Age* | Clause | Cap Hit | AAV | Perf. Bonus | Sign. Bonus | Salary | Compensation | Minors Salary | Status | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019-20 | 18 | $925,000 | $1,350,000 | - | $92,500 | - | $92,500 | - | ELC | ||
| 2020-21 | 19 | $894,167 | $1,319,167 | - | $92,500 | - | $92,500 | - | ELC | ||
| 2021-22 | 20 | $863,333 | $1,288,333 | $425,000 | $92,500 | $832,500 | $925,000 | $70,000 | ELC | ||
| 2022-23 | 21 | $863,333 | $1,288,333 | $425,000 | - | $832,500 | $832,500 | $70,000 | ELC | ||
| 2023-24 | 22 | $863,333 | $1,288,333 | $425,000 | - | $832,500 | $832,500 | $70,000 | ELC | ||
| Total | $1,275,000 | $277,500 | $2,497,500 | $2,775,000 | $210,000 |
| Regular Season | Playoffs | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | League | Team | GP | G | A | Pts | +/- | PIM | Shots | Sh% | TOI/G | GP | G | A | Pts | +/- | PIM | Shots | Sh% | TOI/G |
| 2014-15 | Jr. C SM-sarja | Ilves U16 | 19 | 2 | 2 | 4 | 6 | |||||||||||||
| 2014-15 | WSI U15 | Finland Selects U15 | 7 | 1 | 1 | 2 | ||||||||||||||
| 2015-16 | U16 SM-sarja | Ilves U16 | 24 | 6 | 12 | 18 | 18 | |||||||||||||
| 2016-17 | U18 SM-sarja | Ilves U18 | 39 | 9 | 11 | 20 | 24 | 4 | 2 | 2 | ||||||||||
| 2017-18 | U20 SM-liiga | Ilves U20 | 49 | 12 | 15 | 27 | -4 | 44 | ||||||||||||
| 2017-18 | WJC-18 | Finland U18 | 7 | 0 | 2 | 2 | +3 | 2 | ||||||||||||
| 2017-18 | U18 SM-sarja | Ilves U18 | 6 | 4 | 3 | 7 | 2 | |||||||||||||
| 2018-19 | WHL | Kelowna Rockets | 63 | 17 | 24 | 41 | 40 | |||||||||||||
| 2019-20 | Liiga | Ilves | 39 | 7 | 6 | 13 | 12 | |||||||||||||
| 2019-20 | WJC-20 | Finland U20 | 7 | 0 | 3 | 3 | +1 | 8 | ||||||||||||
| 2020-21 | AHL | Belleville Senators | 35 | 1 | 12 | 13 | -11 | 12 | ||||||||||||
| 2020-21 | Liiga | Ilves | 18 | 0 | 2 | 2 | 4 | |||||||||||||
| 2021-22 | NHL | Ottawa Senators | 16 | 0 | 5 | 5 | -8 | 2 | 18 | 0.0 | 17:15 | |||||||||
| 2021-22 | AHL | Belleville Senators | 44 | 10 | 16 | 26 | +6 | 54 | 2 | -3 | ||||||||||
| 2022-23 | AHL | Belleville Senators | 56 | 7 | 26 | 33 | -9 | 28 | ||||||||||||
| 2022-23 | NHL | Ottawa Senators | 2 | 0 | 0 | 0 | -2 | 4 | 1 | 0.0 | 10:54 | |||||||||
| 2023-24 | AHL | Belleville Senators | 67 | 6 | 15 | 21 | -14 | 56 | 5 | 2 | 2 | +1 | 2 | |||||||
| 2024-25 | EHT | Finland | 9 | 1 | 1 | 2 | -4 | 2 | ||||||||||||
| 2024-25 | SHL | Malmö Redhawks | 50 | 17 | 12 | 29 | +2 | 26 | 8 | 3 | 1 | 4 | -5 | 10 | ||||||
| 2025-26 | AHL | Belleville Senators | 55 | 14 | 11 | 25 | +1 | 54 | ||||||||||||
| 2025-26 | NHL | Ottawa Senators | 11 | 0 | 3 | 3 | +3 | 11 | 0.0 | 13:45 | 1 | 1 | 0.0 | 13:01 | ||||||
| NHL Career | 29 | 0 | 8 | 8 | -7 | 6 | 30 | 0.0 | 15:29 | 1 | 1 | 0.0 | 13:01 | |||||||