Controversial sprinter Dwain Chambers is learning to play rugby league with Super League strugglers Castleford Tigers

The 60m silver medallist from the World Indoor Athletics Championships has never played the sport

Chambers has only had three training sessions so far and will definitely not make his debut this weekend (5/6 April)

Chambers, who served a two-year ban for using illegal drugs, will provide his new team-mates with sprinting tips

Chambers will have to get used to the physical nature of what is frequently described as a "collision sport"

If he does make it he will be exposed to some brutal tackling, and Awen Guttenbeil (right) is only too happy to prepare him for the task

Chambers faces a tough battle to make it - only time will tell if he can move across to a game where speed is only part of the equation