Merelä, 24, played for Tappara of the Finnish Elite League, the top professional ice hockey league in Finland, during the 2022-23 season and posted 15 goals and 33 points in 41 regular season contests. The right-shot winger also averaged a point a game in 14 playoff contests, recording eight goals and 14 points to lead the team for goals and rank tied for second for scoring in helping Tappara to its second-straight Liiga championship. In 2021-22, Merelä notched 21 goals and 44 points in 57 regular season games for Tappara, ranking second on the team in both categories. He led Liiga in 2021-22 for plus/minus (+31) and finished tied for fifth for goals and eighth for scoring.