KEY BISCAYNE OPEN TICKETS – Key Biscayne Open, Sony Ericsson Open, or Miami Masters pro tennis tournament, is held in March at the Tennis Center at Crandon Park in Key Biscayne, Florida. (18.3 - 31.3, 2013). The Miami Masters, currently sponsored by Sony Mobile, is an annual event for men and women held in Key Biscayne, Miami, Florida. It is an ATP World Tour Masters 1000 event on the men's tour and a Premier Mandatory event on the women's tour and is played on hard courts. The Miami Masters was renamed the Sony Ericsson Open. The 12-day Sony Ericsson Open is one of the largest tennis tournaments outside the four Grand Slam tournaments. The prestigious top tier APT World Tour Master 1000 competition consists of nine tournaments played in Indian Wells, Miami, Monte Carlo, Roma, Madrid, Canada, Cincinnati, Shanghai and Paris.