Original: Goaltenders can also be given credit for a goal when they are the last person to touch the puck before an opponent inadvertently puts the puck into their own net. This was the case for the most recent instance of goaltender scoring, when Chris Mason was credited with a goal in 2006.
Simplified: The most recent to do so was Chris Mason in 2006, who was credited with a goal after he was the last player to touch the puck before his opponents put the puck into their own net.