I solved the mystery lol lol

The Canada Jerseys were used during the Yankees game. I looked at my photos although they are a bit hard to tell. You can see there is no number listed in the front of the Jerseys.

I am not sure if they used these Jerseys for other games.

Also to add I noticed during the actual WBC Games the Red Jerseys they were using some had white sides.
The ones they used against the Yankees were completely red.

They used black jerseys for BP, for the game against the Yankees.

I actually have a picture of Teahan with his back to me wearing this Jersey.

Jason