CREATE TABLE table_22936 ("Tie no" FLOAT, "Team 1" TEXT, "Agg." TEXT, "Team 2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

How many 1st leg have team 1 ofk belgrade?
SELECT COUNT("1st leg") FROM table_22936 WHERE "Team 1" = 'OFK Belgrade'
SELECT COUNT("1st leg") FROM "table_22936" WHERE "Team 1" = 'OFK Belgrade'