Pete Prisco with CBSSports.com arrived at Paul Brown Stadium to watch Cincinnati's practice Thursday evening. And as most sit and watch this team practice with the immense talent showcasing mad skills, Pete Prisco came away highly impressed by wide receiver A.J. Green.

When we rank NFL receivers right now, it's the Big Three at the top: Calvin Johnson, Andre Johnson and Larry Fitzgerald -- in whatever order you want to place them. By December, it will be at least the Big Four. I predict Cincinnati Bengals receiver A.J. Green will make it that way.

The writer details the jump most of the league's top receivers made during their respective second seasons.

The top five receivers last season in yards per game were Calvin Johnson, Wes Welker, Victor Cruz, Fitzgerald and Steve Smith. Those five averaged an improvement of 47 catches from their first to their second seasons, with Cruz going from none in 2010 to 82 last season. The smallest increase was 29 by Welker.

The part that interested me the most?

To help prepare for his second season, Green added 10 pounds of muscle to his 6-foot-4 frame. He is now 213 pounds and looks much more solidly built. He's never going to be thick like Andre Johnson, but he knew he had to get bigger to deal with the physical style of play of the NFL.