Jonas Siegenthaler Bio
Jonas Siegenthaler is a Swiss professional ice hockey player who serves as a defenceman for the New Jersey Devils of the National Hockey League (NHL). Born on May 6, 1997, in Zürich, Switzerland, Siegenthaler developed his skills in Switzerland’s top hockey program before being selected 57th overall by the Washington Capitals in the 2015 NHL Entry Draft. After spending several seasons refining his game in North America, he emerged as a reliable two-way defender known for his physical presence and defensive reliability. Siegenthaler joined the New Jersey Devils in April 2021 and has since become an integral part of their blue line, signing a long-term extension to remain with the franchise through 2027.
Early Life and Background
Jonas Siegenthaler was born in Zürich, Switzerland, where he began skating at a young age. His father is from Switzerland while his mother is from Thailand, making him the first known NHL player of Thai descent. This unique heritage has drawn attention to his trailblazing role in bringing international representation to professional hockey.
Siegenthaler grew up immersed in Swiss hockey culture and developed his fundamentals playing for local clubs in the Zürich area. His early promise on the ice quickly set him apart from his peers, earning him opportunities to compete at higher levels within Switzerland’s development system.
Path to Professional Hockey
Siegenthaler’s progression through Swiss hockey led him to the ZSC Lions organization, one of Switzerland’s most prestigious clubs. He made his National League A debut during the 2013–14 season, stepping onto the ice against seasoned professionals as a teenager. His performance in Switzerland’s top league attracted attention from NHL scouts, who recognized his potential as a future North American contributor.
Rated as a top prospect leading into the 2015 NHL Entry Draft, Siegenthaler was projected as a possible first-round selection. When the Washington Capitals chose him with the 57th overall pick, it validated years of development and signaled the beginning of his professional journey in North America. Following his selection, Siegenthaler remained on loan with the ZSC Lions for the 2015–16 season to continue his growth. In 40 games that season, he contributed 8 points from the blueline before the Lions were eliminated in the first round of the postseason.
Jonas Siegenthaler Career
Hershey Bears Development (2016–2018)
With his loan period to the ZSC Lions concluded in March 2016, Siegenthaler was reassigned to the Hershey Bears, the Washington Capitals’ American Hockey League (AHL) affiliate. The transition to North American professional hockey required adjustment to smaller ice surfaces and different playing styles, but Siegenthaler steadily adapted his game. He split the 2016–17 season between Hershey and a return to the ZSC Lions before fully committing to the Capitals organization.
His time in Hershey proved invaluable for developing the defensive instincts and positional play that would define his NHL career. The Bears’ system provided him with regular minutes and the opportunity to face top competition in a professional environment.
Washington Capitals Breakthrough (2018–2021)
Siegenthaler received his first NHL recall on November 8, 2018, when the Capitals needed defensive depth due to injuries to veteran blueliners Brooks Orpik and John Carlson. He made his NHL debut the following night against the Columbus Blue Jackets at home, marking the realization of his childhood dream. The circumstances of his debut—stepping into a key role against a competitive opponent—demonstrated the organization’s confidence in his readiness.
Siegenthaler scored his first NHL point on December 14, 2018, recording the primary assist on a goal by Alexander Ovechkin in a 6–5 victory over the Carolina Hurricanes. Playing alongside one of hockey’s greatest scorers provided Siegenthaler with invaluable experience and helped establish his reputation as a reliable defender capable of contributing at the highest level.
He appeared in 62 games during the 2019–20 season, establishing himself as a steady presence on Washington’s third defensive pairing. His physical style and willingness to block shots became trademarks of his game, though his offensive contributions remained modest as he focused on defensive responsibilities.
New Jersey Devils Era (2021–Present)
On April 11, 2021, approaching the NHL trade deadline, the Washington Capitals dealt Siegenthaler to the New Jersey Devils in exchange for a conditional third-round pick in the 2021 NHL Entry Draft. The trade represented a new chapter in his career, moving him to a franchise in the midst of rebuilding and seeking young players to anchor its future.
Less than three months after the trade, on July 9, 2021, Siegenthaler signed a two-year, $2.25 million contract extension with the Devils, committing his immediate future to the organization. The deal reflected the team’s belief in his long-term value and provided him with stability as he continued his development in New Jersey.
On July 26, 2022, Siegenthaler and the Devils agreed to a five-year, $17 million contract extension running through the 2026–27 season. The significant investment signaled that the organization viewed him as a core piece of its defensive core for years to come.
Playing Style and Strengths
Siegenthaler has established himself as a reliable, defense-first defenceman known for his robust physical play and positioning. Standing at 6 feet 2 inches and weighing 218 pounds, he uses his size effectively to win board battles, separate opponents from the puck, and protect his own zone. His willingness to block shots and absorb contact has become a defining characteristic of his game, though this style occasionally exposes him to injuries.
Notable Events and Milestones
On January 6, 2024, Siegenthaler suffered a broken foot while blocking a shot during a game against the Vancouver Canucks. The injury required him to be placed on injured reserve, and he was not cleared to return until February 20. Later that season, on March 11, he was the victim of an elbow from New York Rangers forward Matt Rempe, causing a concussion that forced him out of the lineup for an extended period. Rempe received a four-game suspension for the hit. These injuries highlighted the physical toll of his defensive style while demonstrating his resilience in returning to play.
Jonas Siegenthaler International Career
Siegenthaler has represented Switzerland at multiple international tournaments throughout his career. He competed with Switzerland’s under-18 team at the IIHF World U18 Championships in 2013, 2014, and 2015, earning recognition when he was named to the 2015 U18 All-Star Team. He also participated in the 2014 Ivan Hlinka Memorial Tournament and, as a 17-year-old, was selected to skate with Switzerland’s junior squad at the 2015 World Junior Championships.
His most recent international appearance came at the 2024 IIHF World Championship, where he helped Switzerland capture a silver medal. Throughout his international career, Siegenthaler demonstrated his ability to log heavy minutes and contribute in all situations, establishing himself as a trusted option for Swiss national team coaches.
2025 Season Outlook
Entering the 2024–25 season, Siegenthaler continues his recovery from the concussion suffered in March 2024 and looks to re-establish himself as a key contributor on the Devils’ blue line. The organization enters the campaign with elevated expectations following several seasons of rebuilding and the accumulation of young talent around its core.
Siegenthaler’s experience and defensive reliability provide valuable mentorship to younger players in the Devils’ system. His long-term contract through 2027 offers him the opportunity to be a foundational piece of New Jersey’s blue line as the team aims to become a consistent playoff contender in the Metropolitan Division.
