 Complete the following phrase:  John Lee Gray Jr. born June 19, 1960 is a retired American world class 800 meter runner from the mid-1980s to the late 1990s and the holder of the 600m world best. A four-time-Olympian 1984-1996 in 1985 he set the US record of 1:42.60 at a meet in Koblenz. That time puts Gray as the nineteenth fastest performer of all time. He came seventh in the 1984 Summer Olympics, fifth in 1988, and won the bronze medal at the Barcelona Olympics of 1992. In 1993 Gray was one of the favourites to win a gold medal at the 