The Petes originally selected the Berlin, Germany native in the first round, 31st overall, of the 2023 CHL Import Draft. The 6’7” defenceman has played 10 games over two seasons for Eisbären Berlin of the DEL, Germany’s top league.
Since 2023, he’s featured in 18 games for Eisbären Juniors Berlin U20, scoring two goals and adding six assists for eight points. The 2006-born Kaiser has also played 24 games on loan with Lausitzer Füchse of the DEL2, scoring once and adding two assists.
“Rio is a defenceman who already has experience playing professional hockey in Germany’s top league,” said Michael Oke, general manager and vice president of operations. “He’s very difficult to play against and is a big, physical presence on the ice. We think he’s a good addition to our team and we’re excited to see him on the ice.”
Kaiser has represented Germany at multiple levels. Most recently, he suited up for Germany U20 at the 2025 World Junior Championships in Ottawa.
“I’m a big defenceman who likes to play physical,” said Kaiser. “I’m really excited to be here and to get started with the Peterborough Petes.”
Kaiser will wear number 17 and is expected to make his OHL debut against the Soo Greyhounds at GFL Memorial Gardens.
The Petes lost their last game 4-1 to the home North Bay Battalion on Thursday night.
