Rangers defenseman Adam Fox played against Kakko at the 2019 IIHF World Championship, when Kakko played for Finland and Fox for the United States.
Kakko dominated that tournament against players who were sometimes more than 10 years older. He had six goals and an assist for Finland, which finished first.
In Finland's top professional league, Kakko had 38 points (22 goals, 16 assists) in 45 games for TPS.
The Rangers played Tuesday against the St. Louis Blues in the fifth-place game of the tournament (12:30 p.m. ET), though Kakko and Fox were among New York's scratches.
Fox said he was excited to share the ice with Kakko as a teammate.
"You look at him and you almost forget that he is 18 and one of the youngest guys here," Fox said. "Like I said, there is a reason he was taken second overall, there was a reason he did so well at the World Championship. He is a big guy with a lot of skill, and I think he will do just fine in the NHL."
Kakko (6-foot-3, 195 pounds) experienced some difficult getting going Monday despite playing on the first line with highly touted forwards Vitali Kravtsov and Karl Henriksson. But a five-minute major against Wild forward Drake Pilon with 1:13 remaining in the second period brought Kakko to life.
At 1:06 of the third period, he had the secondary assist on a power-play goal by Kravtsov to get the Rangers rolling. At 2:42, he made a nice cross-ice pass to Kravtsov for the tying goal, again on the power play.
"It is so hard, it is a smaller rink and not like in Finland, so it is a different game," Kakko said.
Then, with 1:37 remaining, he set up Newell for the tying goal. It was a dominating 20 minutes of hockey and it provided a hint of the youth movement that the Rangers are so excited about, a pipeline that is headlined by Kakko, Kravtsov and Fox.
Kravtsov was a first-round pick (No. 9) by the Rangers at the 2018 Draft.
"Starting at development camp, you kind of saw what those guys could do and you definitely thing about playing with them in the future and the skill they have," Fox said of Kravtsov and Kakko. "It's exciting. Just trying to be a part of that in the future going forward is exciting."
Video courtesy: New York Rangers