This list is about two former players and two active players from tennis and football.
Complete the table by filling the missing national flags and the missing player.
The completed table should look like this:
Because...
In each row the three flags represent:
Top left: Country whose standard 2-letter code begins the pictured sportsperson's first name;
Top right: Country whose standard 2-letter code begins the pictured sportsperson's last name;
Bottom: The player's nationality.
So the top two rows are interpreted as:
Benin (BJ) + Bolivia (BO) = BJORN BORG (Sweden)
and
Jordan (JO) + Costa Rica (CR) = JOHANN CRUYFF (Netherlands)
And the bottom two need to be completed with:
The flags of Norway (NO), Djibouti (DJ), and Serbia to represent the Serbian tennis player NOVAK DJOKOVIC
and
An image of TONI KROOS, a current German footballer, as the flags are those of TONGA (TO), SOUTH KOREA (KR) and Germany.