Irish sailor Annalise Murphy leads the field at the midway point of the Sailing World Cup regatta in Miami.

It is Murphy's first competitive event since the London Olympics.

The 29-boat Laser Radial fleet have had three days racing and six races in fantastic conditions on Biscayne Bay, Miami.

Murphy’s first day on the water resulted in fifth and a sixth place finishes but on day two she took a stranglehold on the event.

A second and first result catapulted Murphy into an overnight lead.

Day three produced similar results as she won one race and placed third in the other, maintaining her lead overall.

American Paige Railey, who was a medal race finalist in London and a bronze medallist from the 2011 World Championship, closely trails Murphy.

The second half of the regatta comprises a further five races, which will be sailed on Thursday and Friday.

After racing on Friday, the top ten will advance to the medal race on Saturday.

ISA Performance Director James O’Callaghan said: “It is great to see Annalise back competing. Her hunger for success makes her a great role model for our young sailors coming through our ISA programmes.”