London 2012 Day 4: ones to watch

Zara Phillips will be hoping for glory Credit: PA

It's Day 4 of the Olympics and there are a number of London-based athletes to watch out for.

Zara Phillips will jump for glory with fellow riders from Britain's eventing team today as they reach for Team GB's first gold of the Olympics.

The Queen's granddaughter can expect a rapturous reception from the home crowd at Greenwich Park as she takes part in the showjumping finale of the tightly-fought competition, with first place still very much in sight.

Richard Kruse is Britain's leading fencer Credit: PA Wire

Meanwhile in fencing, Londoner Richard Kruse is hoping for a medal in the foil individual competition. This year Kruse won bronze at the European championships.

He pipped fellow Brit favourite, Laurence Halsted, to qualify for the Olympic team and was the first British fencer to qualify outright for London 2012 after winning a satellite event in March at Copenhagen.

Mark Hunter is a reigning Olympic champion. Credit: PA

Londoner Mark Hunter has already begun defending his Olympic title by winning the men's lightweight double sculls heats along with partner Zac Purchase.

The duo, who have suffered indifferent form this year, clocked a time of six minutes 36.29 seconds.

They beat New Zealand by half a length, with both crews reaching the semi-finals at Eton Dorney.

Today they continue their battle for gold.

Andrew Simpson (left) racing at the London 2012 Olympics on Weymouth Bay. Credit: PA

And Surrey born sailing star Andrew Simpson is currently in joint top position after a good day yesterday. Today he will be looking to build on that performance in Weymouth with partner Iain Percy.