By Dan Ambrose: Andy Lee (28-2, 20 KO’s) remarked after his 7th round TKO loss to WBC middleweight champion Julio Cesar Chavez Jr. (46-0-1, 32 KO’s) that Chavez Jr. was walking right through every shot he thew last Saturday night, and that he couldn’t keep him off.

What Chavez Jr. accomplished against Lee, he likely won’t be able to do the same thing against WBC Diamond middleweight champion (49-2-2, 28 KO’s) in their fight coming up on September 15th at the Thomas & Mack Center, in Las Vegas, Nevada. Chavez Jr. will have a real problem trying to walk through Martinez’s scorching left hand bombs, right hooks and stiff jabs.

He’s a much bigger puncher than Lee with either hand and he’s also got a lot better jab. Lee was mostly pawing with his jab last night, and naturally Chavez Jr. was able to walk through it. The only thing Lee had was his straight left hand. He didn’t throw many right hooks that landed with big power. But what really may have sunk Lee’s ship was his ability to move around the ring. He needed to use movement against Chavez Jr. instead of just standing right in front of him making it easy.

Martinez, 37, moves constantly and he won’t be a stationary target for Chavez Jr. land his big body shots against. That’s not going to happen. If Chavez Jr. wants to beat Martinez, he’ll have to change his game completely by becoming more mobile. He’s going to need to cut off the ring over and over again against Martinez. That’s going to be dangerous because Martinez likes to set traps against guys that chase him around by stopping and landing big left hand shots.

If Chavez Jr. runs into one of Martinez’s big left hands, I don’t care how good Chavez Jr’s chin is – he’ll be hurt. John Duddy staggered Chavez Jr. in their fight in June 2010, and he’s not even close to being the puncher that Martinez is. If Duddy can hurt Chavez Jr., then Martinez will as well.