It has been a while since I have posted on here, but I am back with weekly looks at MMA, mainly the UFC.

So, here is a look at what we learned this week.

– Nate Diaz may be an unsolvable problem for 155 pounders – Nate Diaz looked more than impressive against Jim Miller in the UFC on FOX 3 main event on Saturday. Miller had the kind of style that I expected to give Diaz some trouble, but he ran right through him. Diaz’ long reach has really been a problem for his opponents and he seems to be a vastly improved fighter since moving back from welterweight to lightweight. Miller was one of the top fighters in the division and Diaz made him look like a first timer. Diaz could legitimately become the UFC champion as I don’t know that a Benson Henderson or Frankie Edgar will be able to outwork him or deal with his jabs.

– Where does Josh Koscheck go from here? – Certainly it would be hard to say that Josh Koscheck was dominated by Johny Hendricks and you could maybe make the argument that he beat Hendricks on Saturday. Regardless, Koscheck certainly didn’t dominate Hendricks either. Koscheck seems to have become a fighter that refuses to go back to his roots when needed. He is one of the top wrestlers, and perhaps most explosive wrestler, in the 170 pound division. Koscheck is relying on his big swings and limited striking to try and win fights, even when it is clear he is not winning. Koscheck has only been out-wrestled one time in his career, and that was by Georges St. Pierre. In a fight like Saturday’s, I would have liked to see him take Hendricks down and work his ground striking as opposed to hoping for a knockout punch. Now Koscheck is lost in the welterweight division and not capable, in my mind, to make a run at middleweight. He needs to reinvent himself if he hopes to ever win UFC gold.

– Where would Alan Belcher be if he never got injures? – Belcher had about as good of a performance as Diaz, as he stopped Rousimar Palhares in the first round with some vicious ground and pound. Belcher was on a nice run in the UFC prior to an eye injury that nearly ended his career and sidelined him for over a year. Since his return, Belcher has first round finishes of Jason MacDonald and Palhares and he has won four straight overall. The middleweight division has quickly become very competitive with the addition of Hector Lombard. With Chael Sonnen, Brian Stann, Mark Munoz, and Michael Bisping all in the mix, Belcher should be right there with them.

Lost in a weekend that saw the Strikeforce Heavyweight Grand Prix semifinals take place were some big fight announcements from the UFC.

Here is a look at three different UFC events that have added to their cards.

– UFC 140 in Toronto go its main event as heavyweights Frank Mir and Antonio Rodrigo Nogueira will have their rematch. The two met back at UFC 92 with Mir handing Nogueira his first stoppage loss. Mir KO’d Big Nog in the second round. Nogueira claimed a staph infection hindered his abilities and has been seeking a rematch since. Mir has won his last two fights and looking to get back into the title hunt with a win while Nogueira is coming off his KO win over Brendan Schaub at UFC Rio. UFC 140 also added Tito Ortiz vs. Antonio Rogerio Nogueira and Brian Ebersole vs. Rory MacDonald to the lineup.

– UFC 139 picked up a big fight as middleweight Vitor Belfort will return to action when he takes on former Strikeforce champion, Cung Le. This will be a battle of perhaps the two fastest strikers in all of MMA. Le hasn’t fought since June of 2010, when he KO’d Scott Smith to avenge his only loss. Belfort is coming off a KO win over Yoshihiro Akiyama at UFC 133. This fight should come down to which fighter strikes first.

– Jon Fitch will make his long-awaited return to the octagon at UFC 141 when he faces off with Johny Hendricks. Fitch hasn’t competed since February when he had a draw against B.J. Penn. Fitch had shoulder surgery that put him on the shelf for a while. Fitch hasn’t lost since his 2008 title fight with Georges St. Pierre. Hendricks has one loss in his career, to Rick Story back in December of 2010. He has won his last two fights, but is facing the toughest opponent of his career when he squares off with Fitch.

The middleweight division had a big fight this past weekend but the result wasn’t too surprising.

Anderson Silva maintained his top spot in my top 10 middleweight rankings with his win on Saturday and it seems he has only one man that can truly pose a threat to his championship.

Here is a look at the top 10 in the 185-pound division in my eyes.

1. Anderson Silva (31-4) – Silva made Yushin Okami look like an amateur last Saturday and he has cemented himself as the best middleweight in UFC history. Next up for Silva will likely be a rematch of some kind, with either Chael Sonnen or Dan Henderson.

2. Chael Sonnen (25-11-1) – Sonnen hasn’t competed since pushing Silva to the limit last fall, but he is scheduled to face Brian Stann at UFC 136 in early October. Sonnen appears to be the lone hope to dethrone Silva someday, but the champion still managed to submit Sonnen despite an injured rib and 20 minutes of pummeling.

3. Vitor Belfort (20-9) – Belfort showed his explosive ability in his quick knockout of Yoshihiro Akiyama at UFC 133. He still may have the fastest hands in the division, but he missed his opportunity when he faced Silva back in February. A few more wins for Belfort may get him another crack at the title.

4. Yushin Okami (26-6) – Okami also had his chance, but couldn’t find a way to make his fight with Silva a grappling one. He seemed to passive and allowed Silva to get comfortable on his feet, and that is always a losing combination. Okami has to go back to the drawing board, and will likely need a long winning streak to get another title fight.

5. Michael Bisping (21-3) – Bisping is going to face off with Mayhem Miller later this year for a chance to propel himself into title contention. Bisping is still looking for a marquee win in his career and he hasn’t been terribly impressive since his TKO win over Denis Kang back at UFC 105 in 2009. Bisping needs an emphatic victory over Miller to really be considered a title contender.

6. Ronaldo “Jacare” Souza (14-2) – The Strikeforce Middleweight Champion is set to return to action next week against Luke Rockhold, who is good competition in the Strikeforce organization, but not a great opponent on the world stage. Someday, with Strikeforce slowly merging into the UFC, I would expect Souza to compete in the elite organization someday.

7. Brian Stann (11-3) – Stann faces his toughest test to date when he squares off with Chael Sonnen at UFC 136. Stann has established himself as a feared striker in the division with respectable grappling skills. In this fight, he will need to have tremendous takedown defense to keep the relentless Sonnen from getting top position.

8. Mark Munoz (11-2) – Munoz will take on Chris Leben at UFC 138 in the highest-profile fight of his career. Munoz is a grinder that has some big punching power without the technique. His strength is his wrestling, but he will mix it up with anyone. He should probably stick to the wrestling in his bout with Leben.

9. Chris Leben (22-7) – Leben breaks into my top 10 list after his impressive KO of Wanderlei Silva at UFC 132. Leben clearly has the striking power to beat anyone on this list, but lacks the grappling skills and pure boxing technique to really become a top 5 contender. His bout with Munoz will test how far his grappling has come and show if he is ready to make a serious run at the title.

10. Alan Belcher (16-6) – Alan Belcher will make his return to action in a couple weeks after an eye injury sidelined him for more than a year. Belcher was on his way to becoming a title contender before getting hurt. When he returns on Sept. 17, he will face off with Jason MacDonald, another UFC veteran. The long layoff will be something Belcher has to overcome, but a win over the submission specialist will be a nice start for his return.