Xavier Doherty, Ashton Agar and Fawad Ahmed have all caught their eye. In the past year, Lyon was unceremoniously dumped out of the test side for Doherty and Agar.
Before that his role was that of a stock bowler. He was encouraged to shut up one end, and then accused of not being a wicket-taker.
It came to a head against South Africa a year ago in Adelaide - he may have cut the grass there but could he cut it as a match-winner?
South Africa began the final day on 77 for 4, with Australia seeking a series-clinching victory. The stage was set. The innings ended with the tourists eight down and Lyon having sent down 50 overs and taken 3 for 49. He had been asked to do the wrong thing and he was doing it very well, was how former Aussie spinner Stuart MacGill put it of Lyon's perceived defensive role.
"I've learnt a fair amount playing a few tests [in Adelaide]," said Lyon this week. "I've learnt a fair amount about my game and what I need to do and what I need to do to get better. Fingers crossed, there's a little bit more spin down there and we'll see how we go."
He has come and gone this year. He was dropped for Doherty mid-series in India. He was dropped for Agar for the first Ashes test in England. Last week, Agar was in Perth playing for Western Australia and picking up a fine for his response to having an appeal turned down. Lyon kept his cool in Brisbane and, more significantly, out-bowled Swann.
It was the bounce he extracted at The Gabba that proved Lyon's most effective weapon but his ability to turn the ball should not be overlooked - his first ball in test cricket saw him spin one on to Kumar Sangakkara's edge, while in India this year he bowled Sachin Tendulkar through the gate.
After victory in Brisbane, it was Lyon who led the traditional singing of Under the Southern Cross. Mike Hussey passed the honour on to Lyon when he retired this year. Hussey had been appointed Lyon's mentor by the then Australia coach Tim Nielsen for the spinner's first tour in 2011. Hussey, a man who, in terminology to suit a groundsman, calls a spade a spade, liked what he saw. He has long been convinced Lyon has what it takes.
"He's not going to be intimidated," explained Hussey recently, "and he's willing to stick to what he does which, when he gets it right, is just beautiful."
- The Independent