When you think of rugby league legends now earning their living in rugby union, former Wigan star Jason Robinson springs immediately to mind.

The England full-back has been a sensation since joining the 15-man code, but he is by no means the only former Wigan great now involved in union.

Shaun Edwards had a stellar league career, earning 36 caps for Great Britain and winning numerous honours with the legendary Wigan side that dominated the sport in the late 80s and early 90s.

But Edwards has also crossed to union and is now working as a backs coach with Premiership outfit London Wasps, joining a long list of league luminaries now coaching in union.

Edwards does have previous union experience. After all, he captained England under 16s - not bad for a lad who only played around 15 games as a schoolboy.

But the switch to Wasps involved a lot of hard work as he sought to build up his knowledge of union.

"Obviously I did a lot of homework before I went into rugby union," said Edwards. "Since I've been involved with Wasps I've learned a lot more about the game.

"It's a lot more technical game than rugby league."

Edwards has always been recognised as having one of the finest footballing brains around and he is clearly a quick learner, because his role has expanded since he joined the West London outfit.

"The space is only to the back foot at a breakdown, unless it is at a line-out, whereas in rugby league the defence has to retreat 10 yards at the play-the-ball situation."

And helping create try-scoring opportunities is not the only huge task on Edward's mind, with Wasps having had a poor first half of the season.

"Wasps had a slow start to the season," he said. "We've had a lot of injuries but we've got nine games to go and hopefully we can start climbing up the table a bit more."

If Edwards is half as effective as a coach as he was as a player, the Wasps will soon be buzzing again.