Tennis balls are made up of a hollow rubber core and a wool or nylon shell known as the nap. In tournaments they must be white or yellow in colour. The rubber core is usually filled with pressurised ...

Please launch the Audio Video Console from the link on the BBC News Online website. You may also find the following information useful. Platforms: BBC News Online's Aud ...

64-19, 76-1, 38-73, 54-74 (61), 5-115 (64), 113-0 (102), 68-69 (Trump 64), 56-19, 20-64 (60), 67-45, 68-0 (58), 127-0 (103), 38-63, 25-64, 77-18, 60-9, 69-36, 8-67 (59), 113-0 (104), 0-97 (97), 99-0 ...

There are plenty of squash flavours available The best time to drink them is after exercise as they help your body to top up ...

With three slips, a gully and a short-leg all up in catching positions, this is an attacking field you're most likely to see at the start of a Test match. The bowler needs to bowl an attacking line on ...

Oversteer UNDERSTEER This happens when the front of the car does not have as much grip as the driver wants, and the car has a tendency to plough st ...

The number six is the guy who cleans out the rucks and is primarily a defensive player on the blind-side, shutting down the opposition number eight or number nine. He needs to be someone who likes ...

It started with 10, then three, and then it was one. Would the new winner of this year's BBC Young Sports Personality of the Year award please step forward. And it is........ Everton's Wayne Rooney.

Being at the centre of defence puts you up against the opposition's strikers, which can be a real challenge. You will have to be a good tackler and strong in the air. But the ability to read the game ...

GMT Sci/Tech The magnetic attraction of trains Germany's Transrapid - 450 kph (280 mph) In the coming months, some hard decisions will ...

All scrums must take place at least five metres from the touch or trylines. However the scrum is one of the hardest areas of ...

Las fuerzas israelíes mataron a 11 palestinos en la Franja de Gaza, entre los cuales nueve eran miembros del ala militar del movimiento islámico Hamas, que ahora controla el territorio. Un miembro del ...