Write SQL query to solve given problem: How many times has Sunrisers Hyderabad been the toss winner of a game?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT SUM(CASE WHEN Toss_Winner = ( SELECT Team_Id FROM Team WHERE Team_Name = 'Sunrisers Hyderabad' ) THEN 1 ELSE 0 END) FROM `Match`