The Miami Masters is an annual tennis tournament for men and women held at Key Biscayne, in Miami, Florida. The event's current sponsored name is the Sony Ericsson Open.
The event is part of the ATP Masters Series on the men's tour and is a Tier 1 event on the women's tour. The tournament is played on hard courts at the Tennis Center at Crandon Park. The event is currently held in March each year.
The tournament is widely regarded as the most prestigious on the ATP and WTA tours, and was given the nickname "Fifth Grand Slam". Its importance is reflected by the WTA's decision to designate it a mandatory event, like the 4 Grand Slam tournaments.
The event was initially known as the Lipton International Players Championships. In 2000 there was a change of title sponsor and the event was renamed the Ericsson Open. In 2002, the event became known as the NASDAQ-100 Open. In 2007, the tournament was renamed the Sony Ericsson Open in a deal where the company will pay $20 million over the next four years.
