2011-12: Antti Kalapudas moved up to Karpat Oulu after skating for YJK and OuHu in youth hockey— splitting the season between the club's U18 and U16 teams — and played for Finland's U16 team. In 28 games for the Karpat U18 team, including three playoff games, he scored 3 goals with 3 assists and had 4 penalty minutes. Kalapudas scored 29 goals with 37 assists and 6 penalty minutes in 24 regular season games for the Karpat U16 team and scored 5 goals with 8 assists and 2 penalty minutes in eight playoff games. In 10 games for Finland's U16 team he scored 4 goals with 2 assists and was +4 with 4 penalty minutes.
2012-13: Kalapudas played six games for Karpat's U20 team and was an assistant captain for the Karpat U18 team. He scored 1 goal with 2 assists and was +1 with the Karpat U20 team. Kalapudas scored 31 goals with 32 assists and had 8 penalty minutes in 40 regular season games for the club's U18 squad and scored 1 goal with 1 assist in his only playoff game. He played four games for Finland's U17 team, including three games for the gold medal squad at the Europe Youth Olympic Festival, and had a goal and 2 assists and was +6 with no penalties.
2013-14: Kalapudas tied Karpat teammate Sebastian Aho for fourth in scoring in Finland's A Junior SM-Liiga and played for Finland's U18 team in the 2013 Ivan Hlinka Memorial and 2014 World Junior Championship tournaments. He scored 21 goals and led Karpat with 38 assists in 44 games and was +21 with 14 penalty minutes. Karpat was fifth in the league during the regular season before reaching the playoff finals against Espoo Blues. Kalapudas scored 3 goals with 7 assists and was -3 with no penalties in 12 playoff games. He scored 1 goal with 1 assist for Finland in six games at the Ivan Hlinka tournament and was +2 with 1 goal, 2 assists and 2 penalty minutes in five games at the 2014 WJC. Kalapudas moved up 20 spots between Central Scouting's mid-term and final rankings and was ranked 32nd amongst European skaters prior to the 2014 NHL Draft.
Kalapudas is a light but fairly talented offensive player with the stick handling and passing ability to make the players around him better. He does not play an overly physical game but has been highly productive in putting up points at the junior level in Finland.
Kalapudas has put up impressive offensive numbers playing at the junior level but his long-term potential is still a bit of a mystery. More will be known about him if he can crack the Liiga lineup for Karpat in 2014-15.