Tuma had a successful second season in the OHL in 2004-05 where he say significant increases in his offensive output. After registering five assists in his rookie CHL season, Tuma exploded for 10 goals and 13 assists for a total of 23 points on a team which won the OHL’s West Division. With 107 PIMs (third on his team), Tuma demonstrated a physical component to his game as well. He also finished the season +13, third best on the Greyhounds.
Tuma posesses a very solid size and is beginning to use it to his advantage. He isn't afraid of the rough stuff and is willing to make or take a hit. Tuma is tough along the boards, but can clear the crease with more intensity and toughness. On the defensive side he reads the plays adequately and has a solid positioning to avoid defensive zone gaffes. But he is still quite raw and can use better decision making with the puck. He is a so-so outlet passer, therefore he can still work on this skill. He has a very hard slap shot which is easily tippable and can be used as a pointman on the power play. Mobility and skating isn't a problem for him as he can rule the defensive zone with his smooth stride and acceleration.
He’s adapted to the North American style well, not avoiding rough situations and being physical with opponents in the defensive zone. His decision-making ability could be better as he is prone to making a bad pass, but his skating for a big man is more than adequate.