Complex sentence: Kekäläinen began his hockey career in his native Finland, playing for four years in Finland with a number of teams as well as for Finland in the 1986 World Junior Ice Hockey Championship.
Split into simpler sentences: Kekäläinen began his hockey career in his native Finland. He played for 4 years in Finland with a number of teams and also played for Finland in the 1986 World Junior Ice Hockey Championship.