CREATE TABLE table_54002 ("Player" CLOB, "Pos." CLOB, "From" FLOAT, "School/Country" CLOB, "Rebs" FLOAT, "Asts" FLOAT)

What is the average rebounds for the player who started in 1986 and who plays SG?
SELECT AVG("Rebs") FROM table_54002 WHERE "From" = '1986' AND "Pos." = 'sg'
SELECT AVG("Rebs") FROM "table_54002" WHERE "From" = '1986' AND "Pos." = 'sg'