The Nittany Lions gave up three unanswered goals in the first loss of the Rob Dow era.
Penn State-affiliated wrestlers went 2-1 on the night.
The Nittany Lions will look to get into the win column in their home opener next week.
Tatsch was sidelined in the lead up to the Pinstripe Bowl and has yet to return.
Smith was the last man cut from Canada's World Juniors roster last year.
"He has already come in and had a profound impact on the young men in our program."