The annual tradition of an August World Junior Championship is back Is there any better tradition in hockey than the World Junior Championship around New Years August every winter summer? Here’s the details you need to know. What Maple Leafs prospects are playing? Topi Niemelä and Roni Hirvonen are returning for team Finland, and Matthew Knies is again playing for Team USA. All three are likely to play top roles. Niemelä is Finland’s best defenseman and will likely play a lot of minutes in all situations: the top pair at even strength, the penalty kill, and the power play. Hirvonen…