Big and strong on skates, Tuomisto is a huge defenseman with big potential. He displays powerful strides and is hard to knock off the puck. He also possesses good mobility and speed for a big guy like him. He needs to learn to use his size better in front of the net and in the corners, but overall he’s already an effective player in the defensive zone. He’s able to limit space for opposing players in the defensive zone due to solid gap control. He sometimes overcommits on hits, which result in him being out of position. He’s a strong presence on the ice and reads the game well. He’s able to find open lanes and handles the puck extremely well. He’s doesn’t try to do too much with the puck as he keeps things simple. He actively wants the puck and is great with seeing open ice and giving outlet passes to his teammates. Often looking for an active first pass, he’s great at reading open ice and sees potential breakout passing lanes well. One of the better young passing defenseman in the game, he makes crisp tape-to-tape passes with outstanding accuracy and power. He possesses a powerful shoot from the point as well and is effective as a power-play quarterback. When he adds more muscle to his frame and improves his skating, his overall game will improve.

– FCHockey’s 2019 NHL Draft Guide