RJ? AI? Come on, you gotta be kidding me. Show me something that says RJ is selfish, let alone the MOST selfish in sports. And how is AI selfish? Just because he's probably the most skilled player in the NBA doesn't mean he's selfish. Selfish shooting guards don't average 7 assists/game. He's a team player; he does what it takes to win. Not many players, if any at all, play through what AI plays through injury-wise.
If I had to choose somebody I guess it would be Alexei Yashin or Antonio Davis. Yashin sat out a whole year with the team that drafted him 2nd overall 7 years prior, because he didn't think he was getting enough money. Davis signed in Toronto because he could get the most money, then after we paid him a boatload he sat out with "injuries" on a regular basis and demanded a trade because he didn't want his kids going to school in Canada.
AI and RJ don't hold a candle to Yashin or Davis IMO. And of course you can take your pick of a top NFL WR and they'll probably come off as selfish. TO, Moss, Keyshaun, etc etc.
"Jack, will you call me, if you're able?"
"I've got your phone number written, in the back of my Bible."