CREATE TABLE table_20870 ("Player" CLOB, "No." FLOAT, "Nationality" CLOB, "Position" CLOB, "Years for Grizzlies" CLOB, "School/Club Team" CLOB)

What number does the player who was with the grizzles in 1999 wear?
SELECT MIN("No.") FROM table_20870 WHERE "Years for Grizzlies" = '1999'
SELECT MIN("No.") FROM "table_20870" WHERE "Years for Grizzlies" = '1999'