The young Cumbrian has started in the Sharks' last two games after five months on the sidelines - and it's no coincidence that Steve Diamond's men have won both matches.
Addison has long been touted as one of Sale's biggest, brightest hopes ever since breaking through shortly after Diamond took over as director of rugby early in 2011.
But a succession of frustrating injuries have stalled the 21-year-old's progress and a freak injury ahead of Sale's return to pre-season training in June further derailed his progress.
But after a long rehabilitation period, further complicated by an infection, Addison has come back noticeably bigger in bulk but still possessing the searing pace and eye for an opening that first marked him out as one to watch.
Evidence of that came in last Friday's 26-10 Premiership win over Worcester when his superb, pin-point 40-metre cross-field kick set up a sensational first half try for Mark Cueto.
"I've put weight on and I'm in the best shape I've ever been and feeling fantastic on the pitch as a result," revealed Addison, who is also studying part time for a business degree at Manchester University.
"It's been great to have come back into the team in the position we are and the way we are playing. Our training levels are ten times what they were last year and that's thanks to the new guys who have come in - they have upped the standards and the level of competition which shows the quality we have got.
"The conditioners and physios have done a great job with me and I've put on a couple of kilos this summer while still feeling as agile and powerful as I ever was and I'm definitely a lot heavier than when I started in the first team two and half years ago.
"While I was out injured, I was able to train on my own and focus on my own and I could do a couple of extra weight sessions a week and I think it's just a natural progression when you get older."
Having finally recovered from the latest in a series of injuries, Addison also believes he has come back a wiser player after - by his own admission - rushing his return from lay-offs in the past.
And the former student of Queen Elizabeth Grammar School in Penrith insists that won't be a mistake he repeats.
"I was unlucky to have picked up such a weird injury in the gym at the start of pre-season and then had an infection which halted my progress a little bit," Addison added.
"I was in the gym with the physios doing a bit of readiness for training and I did a standing hop and went over on my ankle.
"Initially, I thought nothing of it but then I went to hospital and had a scan and it revealed that one of my ligaments had come off the bone so I had that reattached.
"That was fine - it was just along the way I picked up an infection which really halted my progress and it was massively frustrating.
"But in my rehab I think I learned the lessons from last year. Looking back, I came back too quickly from injury last year. I should have been a bit more mature at times and not rushed back.
"I've come back from this injury a much more mature player and know what my training load is as in the past I've probably done too much in the week and then felt the effects of that at the weekend.
"It's about growing in the game and becoming a more wiser player and hopefully that's showing in the way I both play and train at the moment."
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