Here's an interesting article about Peter's Christian beliefs, which have led to his nickname, Ned Flanders: "His spiritual beliefs have been well-known to his teammates over the years, who have kiddingly nicknamed him Ned Flanders after the character in "The Simpsons." Budaj laughed along by putting a picture of the fictional Flanders, who holds strong Christian beliefs, on his goalie mask."
I see this year Ned is holding a Slovakian flag. And his first child was born in July, so I'm pretty sure that's why the "July 21, 2010" is on the back. I don't know about the "46" on the back though. Does anyone know?