php variable used as mysqli column name syntax error

php variable used as mysqli column name syntax error

This is where I think it´s the problem...
$sql1 = "SELECT puntos_globales, '$juego' FROM lista_jugadores WHERE
id_jugador='$noTop'";
This is the error message:
Error: You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near
"blackOps2'='1' WHERE id_jugador = '10" at line 1
$juego .. is a php variable that holds the column name; in this case
blackOps2. I don´t know why in the error says blackOps2'='1'??