One-day cricket is all about scoring quickly - it's the fielding side's job to keep the runs down and pick up wickets.

Unlike Test cricket, the fielders are spread out to save the runs.

For the first 15 overs, nine fielders, including the bowler and the wicketkeeper, have to be inside a 30-yard (27.5m) circle when the ball is bowled.

The circle is marked out by markers five yards (4.5m) apart, so the fielders - and umpires - know where to stand.

Usually the fielding team will start with a third man and a fine leg to give the bowler protection on the off and leg side.

With a brand new hard white ball, the bowlers should get it to move, so you'll usually see a couple of slips and a gully to snap up those edges.

The team's best - and quickest - fielders will often be at point and the covers.

Gilchrist: Dangerous in the first 15

Batsmen will be looking to drop the ball into gaps for quick singles, so it's up to these two fielders to close down the space quickly and force run-outs.

With only two fielders outside of the inner circle, the batsman can smash the bowlers past the fielders for those boundaries and sixes in front of the wicket.

Openers such as Adam Gilchrist, Virender Sehwag and Sanath Jayasuriya have been piling on the runs in the first 15 overs making full use of the fielding restrictions.

Rather than play defensively, these players look to score off every ball and more often than not, it's usually with a boundary.

The first 15 overs

Rest of the innings

Off-side field

Leg-side field

Attacking field

Defensive field

One-day field

Jonty Rhodes' top fielding tips

Think of yourself as a goalkeeper trying to save a penalty Walk in as the bowler's running up Jump and land on your toes just as the batsman is about to hit the ball This means you can move in either direction, left or right