CREATE TABLE table_74142 ("Date" CLOB, "Player" CLOB, "Injury" CLOB, "Date of injury" CLOB, "Number of matches  ( Total ) " CLOB, "Source" CLOB)

What is the date of injury when the injury is sustained posterior thigh strains in his left leg?
SELECT "Date of injury" FROM table_74142 WHERE "Injury" = 'Sustained posterior thigh strains in his left leg'
SELECT "Date of injury" FROM "table_74142" WHERE "Injury" = 'Sustained posterior thigh strains in his left leg'