Preparing to defend The Ring and WBC middleweight titles against unbeaten British contender Martin Murray on April 27, boxing powerhouse Sergio Martinez is featured on the cover of Argentina's most recent edition of Rolling Stone magazine.

"I am very appreciative to Rolling Stone for placing me on the cover," said Martinez, 37, the 2010 “Fighter of the Year” who is currently ranked by Ring Magazine as the fourth preeminent pound-for-pound boxer in the world. "It is a great honor for me, and I had a great time working with the people at Rolling Stone on the latest edition of their magazine."

According to the vice president of Sampson Boxing, Nathan Lewkowicz, the native Argentinean is the subject of "a very well-written article" in the periodical that “introduces people that do not follow boxing to one of the sport's best representatives.”

Martinez (50-2-2, 28 KOs), a menacing southpaw who has long been actively involved in anti-domestic violence and anti-bullying causes, last fought on Sept. 15 when he defeated Julio Cesar Chavez, Jr. by a unanimous decision to capture the WBC middleweight belt at the Thomas & Mack Center in Las Vegas, Nev.

The 5-foot-10, 158-pound Martinez, who has also dabbled professionally as a cyclist and soccer player and only began throwing fists at the late age of 20, sustained a partially torn meniscus in his right knee and a broken left hand while utterly outclassing the 27-year-old Chavez (46-1-1-1, 32 KOs) for 11 rounds.

"We at DiBella Entertainment have always believed that Sergio rocks," said Martinez promoter Lou DiBella, 52, a graduate of Tufts University and Harvard Law School. "What better publication then to grace the pages of Rolling Stone? That is just flat-out cool."

After overcoming the 30-year-old Murray (25-0-1, 11 KOs), Martinez plans to "pursue a rematch" against Chavez next September on Mexican Independence Day weekend.

Roger “Pit” Perron is a venerable boxing trainer from Brockton (Mass.) who now works with Mike and Rich Cappiello at their gym, Cappiello Brothers Boxing and Training.

“Sergio is a truly great fighter,” said Perron, 76, who worked in the 1980s with International Boxing Hall of Famer Marvelous Marvin Hagler at the Petronelli Brothers Gym. “The only men he couldn’t take today are (Floyd) Mayweather and (Andre) Ward.”

Despite graying and near turning 38, absolutely nothing indicates that Martinez is diminishing in the squared circle.

Therefore, expect the “flat-out cool” Sergio Martinez to trump both Martin Murray and Julio Cesar Chavez Jr. within a span of roughly five months.