Fatto generale: 138 is keith Deller's score in the 1983 BDO World Darts Championship trophy against Eric Bristow, amongst the most memorable in darting history.
Fatto matematico: 138 is an Ulam number (Sloane's A002858).
Trivia: 138 is the number of constellations of the Triakis tetrahedron.
Data storica: May 17th is the day in 1980 that General Chun Doo-hwan of South Korea seizes control of the government and declares martial law in order to suppress student demonstrations.