My thoughts for the 2012, probably when i check this up again in December i'll feel embarrassed hahaha, but there you go:
Roger Federer: The GOAT is reaching the end of his spectacular career, and in my opinion he won't get any Grand Slam title, but he will definitely make, at least, a GS final.
Rafael Nadal: Based on what i've seen the last 3 months or so, he's also reaching the end of his great career as well, but ,in my opinion, he could win the French Open again, only that one, and maybe reach the final at Wimbledon. He would have to drastically improve his level to beat Novak.
About Federer and Nadal let me point out that what is happening with them lately is absolutely normal, they can not keep the level they used to have forever, it's impossible, that's life, and checking their results, records, titles etc, all i can say is WOW, they can "die in peace".
Novak Djokovic: He will dominate 2012 same way he did last year,hands down, he's the best player nowadays and he can easily win 2 Majors in 2012.
Andy Murray: Personally i don't expect great things from the Scot this year, i mean i don't see him winning his first GS, ...only with a lucky draw (with some upsets...) he could get it.
He has all the shots, he is physically one of the best out there, he's also probably the best player along Federer mixing up his game, in short a high class player...but something is missing, don't know what though.
David Ferrer, Andy Roddick: No changes in my opinion, some tournaments, reaching QF and some SF in Grand Slams, and maybe a 1000 points tournament....
Much respect for this two, 2 super professional players, no ups and downs like the vast majority of players.
Del Potro: This is the man of the year in my opinion, he's the one who can defeat Novak and probably get 1 or 2 Grand Slams, probably AO and the US Open. Talented enough to end the year as a Top 3, if he's healthy he can make it.
Nishikori: He was still recovering his form in 2011, but showed he can hang with the best guys so i hope he can make QF-SF in AO?, a SF-F in 1000 tournament or so. Great potential.
Harrison: Well.. the american improved a lot the last year, honestly a nice surprise, if he continues progressing we could see him reaching QF in either Australia or New York, only hard court tournaments because he has no experience on clay and grass yet.
Simon and Tsonga: mmm don't know what to say, about Simon he will end as a Top 20, but that's all, and Wilfried will reach high rounds in G. Slams but in my humble opinion he won't be able to win his first Major, a shame because he's one of my favorites but he has to improve in many aspects.
Berdych and Fish These two have talent, no doubt about that. Fish will do great playing the US Open Series, as always, he seems to forget how to play good tennis when he's not in the US though. Berdych was born to play tennis, and he will cause upsets and will defeat Nole, Rafa, Federer.. during the year, but he needs to improve mentally and also his consistency.
Verdasco Oh God, don't know what to say about this guy, we're always hoping a great season from him, maybe this could be his year, he has proved during his career he's capable of being up there with the Top guys, but like many other players on the tour his mental weakness is a big problem, we'll see.
Troicky and Tipsarevic: No idea , top 20 guys by the end of the year, that's sure.
Tomic, Dimitrov: Big expectations on these 2, but i won't say anything because i haven't followed them lately so have no idea about how they can perform this year, i know they're young and talented, that's all., what else?
Laurynas Grigelis: 198 singles ranking. I've been following this guy, and i think he can climb to Top 50-Top 60 by the end of the season.
.... so many players to talk about..like Wawrinka, Isner etc, so go ahead and post your thoughts for the 2012.