I don't want to sound like a broken record but genetics should not be a big excuse for a paid professional with all the sport science. As a PT, I have seen people who thought they had terrible genetics getting super fit with easily accessible support. The difference is that they had to work extra harder than the average Joe. I have known amateur athletes on a small pay, designate a sizeable chunk of their wages to keeping fit and being in top shape. Some had to spend money to get the best treatment to get rid of habits like smoking, drinking and diet control, and these guys have no dream of playing with the big boys.
Every athlete, especially the highly paid ones have a responsibility to themselves and owe the fans to do ALL they can to keep fit all year round. If you know that your playing career will last at most 20 years after which you will retire and do whatever you want with your body, is it not worth it while earning millions per year. People poke fun at Ronaldo for his looks and regime but he is doing ALL he can to keep in tip top shape. I think in the Euros, he has clocked the most minutes before the Euros started, yet he is still clocking serious miles up till the Euro final.
I wrote an article a while back on how Messi, as good as he is, has a super strict diet, changing it every season. Even Aguero said that Messi suggested his diet and personal routine to him and he took it on board. I also remember Craig Bellamy doing the same thing, he hired a personal fitness coach that followed him every where, even to the training ground at City. No wonder he tore us apart and Fergie wanted to sign him. Giggs and Rio also took up yoga at their peak.
My friends and I have considered Rooney's physique for some years and while it may be good enough to pass the minimum fitness tests he could have done more to prolong his career definitely. He is not the only player to have this "genetics" issue, neither is he the first to have clocked up such body mileage or played as many games so I don't think it is good enough to put in the "Rooney excuse box". I know that they have personal lives but @ £300k/w, spending £30k/a foro a personal trainer to keep you on top is not too much.
Ps. Has anyone seen the beef'd up Lingard lately?