Career
He played at the 2003 Fédération internationale de football association U-17 World Championship in Finland. Sierra Leone lost two of the three games at the tournament, including a 2-1 loss to the United States team Metzger played in all three games and was again the top scorer for Sierra Leone with two goals.
He has also played 2nd division in Slovakia for MFK TOPVAR TOPOLCANY which he joined for the second half of the 2009 season.
On 1 February 2011, Leone Stars striker Obi Metzger Junior. has joined Finnish premier league side, Football Club Haka on a two-year deal.