All 13 fighters who underwent drug testing at this past month's UFC 114 event tested clean for performance-enhancing drugs and recreational/drugs of abuse.

Nevada State Athletic Commission Executive Director Keith Kizer today e-mailed the drug-testing results to MMAjunkie.com.

UFC 114 took place May 29 at the MGM Grand Garden Arena in Las Vegas. Rashad Evans topped Quinton "Rampage" Jackson in the headliner.

All fighters who underwent drug testing at the recent Strikeforce Challengers 8 event tested negative for drugs of abuse and performance-enhancing drugs.

Brad Darcy, executive director of the Oregon State Athletic Commission, today emailed the results to MMAjunkie.com.

The four fighters tested at the May 21 show came from the main card: Matt Lindland, Roger Bowling, Bryan Travers and Kevin Casey.

The Ultimate Fighting Championship again hosted a show with no failed drug tests.

All fighters who underwent drug testing at this month's UFC 112 event tested clean for performance-enhancing drugs and recreational/drugs of abuse, UFC Vice President of Regulatory Affairs Marc Ratner today confirmed with MMAjunkie.com.

UFC 112 took place April 10 at Concert Arena in Abu Dhabi, United Arab Emirates, and aired on pay-per-view.

On Saturday, Tyson Meyers (242) upped the 242 class drug tested all-time raw record at the NASA Kansas State Championships in Salina, Kansas.

All six fighters who underwent drug testing at this month's WEC 47 event tested clean for drugs of abuse and performance-enhancing drugs.

Ohio Athletic Commission Executive Director Bernie Profato today confirmed the results with MMAjunkie.com.

Those fighters tested at the March 6 event included newly crowned WEC bantamweight champion Dominick Cruz, fellow headliner Brian Bowles, and main-card winners Joseph Benavidez, Javier Vazquez, L.C. Davis and Bart Palaszewski.

lAll eight fighters who underwent drug testing at February's UFC 110 event tested clean for performance-enhancing drugs and recreational/drugs of abuse.

UFC 110 took place Feb. 21 at Acer Arena in Sydney, New South Wales, Australia.

The NSW Combat Sports Authority, the local regulator, oversaw the drug testing, and a UFC official today confirmed with MMAjunkie.com that all the tests came back clean.

After a failed drug test, numerous appeal-hearing delays, the collapse of Affliction Entertainment, and the loss of a would-be fight with Fedor Emelianenko, Josh Barnett (24-5) finally makes his return to competition.

The heavyweight fighter, who hasn't fought in 14 months, today was announced as a participant for DREAM.13.

The organization also announced a bantamweight bout between WEC veterans Yoshiro Maeda (26-7-2) and Cole Escovedo (15-4) for the March 22 event.

With the launch of its new website, the WDFPF has begun publishing a list of lifters who are drug tested by the federation or one its national affiliates, along with the results of those tests. In doing so, the federation joins the IPF, and its affiliates, as well as the AAU as federations which carry out the practice that puts them inline with the WADA Code.

The WDFPF and its affiliates carried out 151 tests, including seven out of competition tests, in 2009. Sixty-one of those test results are still pending, including tests dating back to May. The ADFPF performed 20 of those tests. Two of the three lifters who failed drug tests in 2009 were Americans. In addition, one of nine failures in 2008 was an American.

Hardcore MMA fans have long discussed the reasons why Strikeforce Heavyweight champion Alistair Overeem won’t defend his title, with drug testing in North America coming up often. Seems that M-1 also has questions regarding Overeem’s apparent “growth.” Here’s the quote, via HeadKickLegend:

M-1’s Apy Echteld said that they were interested in fighting Overeem, however they would not fight unless Overeem was drug tested leading up to the fight. In response, Martijn de Jong from Overeem’s team expressed his belief that Fedor deserves a shot at this Strikeforce title, and that they look forward to a potential fight.

The article mentions that there may be a Overeem vs. Rogers bout set for May, which would be the same card that Fedor takes on Fabricio Werdum. Overeem vs. Rogers sounds like a solid match and if both Overeem and Fedor won it would make for a no brainer next match up. Will it happen? We’ll just have to wait and see.

Federation President Bill Carpenter has announced that the UPA has switched drug testing labs for its Amateur Division.