British No 1 defeated van Thiem in Miami doubles quarter finals . robin Murray celebrated his 500th career win in the previous year . Third seed will play the winner of Tomas ##cup and Juan Monaco in the semi finals of the ATP masters 1000 event in Key ##holm .
British No 1 defeated Dominic Thiem in Miami Open quarter finals . Andy Murray celebrated his 500th career win in the previous round . Third seed will play the winner of Tomas Berdych and Juan Monaco in the semi finals of the ATP Masters 1000 event in Key Biscayne .