In the UK they fell to record lows in the last year, although the sector will need such top-up contracts for years to come.
"In terms of dual contracts, I do know that there are lots of discussions taking place between the WRU and Regional Rugby Wales about central contracts, dual contracts and top-up contracts, but I have not seen anything in writing myself".
Moores will therefore be keen to top up his contracted group, which is likely to mean deals for Gary Ballance and Jos Buttler as well as Moeen.
The English Football Association decided to terminate Allardyce's contract on Tuesday after video showed him appearing to offer advice to fictitious businessmen on how to sidestep an outlawed player transfer practice, and also negotiating a 400,000 pound ($519,000) public-speaking contract to top up an annual England salary of 3 million pounds ($4 million). .
He topped up his contract by £50,000, making him the highest earner in English football history, while Vidic is simply keeping his captain's armband warm.
Keep that tank topped up.
Keep the water topped up.
As one of 27 England footballers on central contracts, topped up by a club contract, Aluko can expect to earn around £40,000 a year, but admits there's still a very small percentage of players earning their living from the game.
After cricket had awarded its first contracts to women, rugby union followed; and in football, the FA Women's Super League sees players with club contracts of around £20,000 topped up by similar central contracts if they play for England.
"Now whether that is top ups or central contracts.
