I'm talking more about players who leave a club - either for a rival, or another code - and return seasons later. I really am struggling to think of many who came back better (unless they were very, very young when they left). And I can think of even less who returned from Union anywhere close to the same level. Professional sport is so tough these days. You have to be all-in all the time to reach the very top and stay there. Going to union where you have to learn new skills and unlearn old ones - it just messes with the mind and the body. IMO, RTS was on the downslope when he left league. He picked up a lot of injuries which required many surgeries. Ask any surgeon who is being honest - human beings just aren't as good at fixing joints as mother nature is at creating them. Every surgery robs a player of some percentage of his physical capabilities. If you are lucky and you're in the hands of a competent surgeon (there are plenty of hacks out there) - maybe you only lose 2-5% of the joint's former flexibility, integrity etc. If you aint - like Sammy Burgess, you end up with an infection which eats away at a third of the tissue before it's picked up and .... sayonara career. RTS was a physical freak. At his peak he was playing right on the edge of his physical capabilities. Then came the injuries and you began to see him transitioning into less of a fast-twitch, athletic freak of a player and more of a cerebral one. It's not that he couldn't perform amazing feats. He just couldn't do it as often as before. I wouldn't spend big on the guy. It would be too risky.