Before the meeting with Latvia, Italy had lost to Germany 4-9 and Norway, 1-4.
It was a new loss for the Italians where a serious defensive mistake laid the foundation for the defeat.
It was twelve minutes into the middle period at a goalless position as the 21-year-old defender, Gregorio Gios, hit a play right into the gap of an opponent.
Martins Karsums got the puck for free, advanced towards the Italian box, finished and could then poke in the return.
New group one
Latvia's 1-0 lead stood in the final minutes of the third period.
Italy pressed for a draw, bet and took out the goalkeeper.
Then Latvia was able to write the final score to 3-0 via two simple goals.
After the victory, Latvia is the new temporary group leader in Group B.