By Salvador Rodriguez

Middleweight king Sergio Martinez (49-2-2, 28KOs) has been hunting for a shot at WBC champion Julio Cesar Chavez Jr. (45-0-1, 31KOs) - and both sides have discussed the possibility of a fight for September 15th in Las Vegas. But now Martinez has a thrown a new angle in mix, as the Argentine fighter wants an Olympic drug testing protocol to be involved in his fight with Chavez.

Speaking to BoxingScene.com, Martinez indicates there are no issues related to the money and everything appears to be in order, but Julio must accept the involvement of a random drug testing protocol. According to Martinez, Julio has rejected the idea of Olympic testing and wants the local commission, in Las Vegas or otherwise, to handle the testing regulations of both boxers.

"Regarding the percentages, there is no problem. I've seen their terms and I've put in mine and I only have one - to have Olympic style anti-doping tests. [If we agree on that], I'll accept whatever," Martinez said. "I also want that fight in September, and I'm sure that I'm going to knock him out."

Chavez will return on June 16 in El Paso, Texas - possibly against Vanes Martirosyan. Before a September fight with Chavez, Martinez could end up facing Anthony Mundine or Andy Lee.

If Chavez moves forward with a June fight - without reaching a deal for a mandatory defense against Martinez in the fall - then Martinez and his handlers will push to get Chavez stripped.

"I am interested in Chávez's title. If it becomes vacant, then I will go after another opponent. I'm going to talk to my handlers and we'll see what direction to take [regarding Chavez's June fight]. We have to think carefully about what want to do," Martinez said.

Salvador Rodriguez covers boxing in Mexico for The Record.