Former Tennis Star James Blake Speaks Out After Mistakenly Detained by NYPD

The former tennis star says he was thrown down and handcuffed, prompting an internal investigation.
7:08 | 09/10/15

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Transcript for Former Tennis Star James Blake Speaks Out After Mistakenly Detained by NYPD
minutes. The pike is from 28. Then you have the delays on the expressway. 30 minutes from braintree into Boston. Trains and buses are doing ok. Randy: We will have another update before the top of the hour. You can catch the latest newscenter 5 newscast norow, oany,e N thannew improved WCVB bad the 35-year-old Harvard educated player says he was tackled and thrown to the ground by a plainclothed officer outside new York City's grand Hyatt hotel and handcuffed for 15 minutes. It shouldn't have happened and it's something that we'll deal with with the police and find out what they have to say internally and, you know, hopefully there's video of it and people can see what happened. Reporter: Blake once ranked number four in the world suffered cuts to his left elbow and bruises to his right knee. New York City's police commissioner bill Bratton says they are investigating the matter. Just the nature of what he described is not what we do. Not what we're supposed to do. We will aggressively address it. I will not tolerate any type of excessive use of force. Reporter: Bratton said one of the officers was place on modified assignment after watching surveillance video. Words of little solace to Blake. What would you like to hear from them. An apology. Reporter: For "Good morning America," gio Benitez, ABC news, New York. And James Blake joins us now. Thank you, James. I know that you were reluctant to do this but you think it's a very important story and that there's a bigger story here. First of all, were you injured at all? How are you? I'm shaken up. A couple bumps and bruises but all right. What exactly happened? It's broad daylight in front of the hotel waiting to be transported out to flushing for the open and then what happened? Yeah, it was really shocking. I was standing there just waiting and I saw someone coming from the street running directly at me and as naive as I am I thought it was maybe I didn't recognize a high school friend to mess with me and give EE a bear hug and turned out quickly that is wasn't. He picked me up and body slammed me and put me on the ground and told me to turn over and shut my mouth and put the cuffs on me and I told him the first words out of my mouth were I'm going to 100% cooperate. I don't want any incident, just out of reaction from what I've seen in the media I don't want any miscommunication. You were communicating this with him as you were -- Those are the first words out of my mouth. I'll cooperate. I don't know what happened but I will cooperate with you and he put the cuffs on me. At no time did he let me know he was a police officer. He put the cuffs on me and said stand up and I asked what was going on he said we'll tell you soon. That was it. So you didn't resist at all. No. You were -- No, I feel lucky I didn't. Because I'm happy that my reaction was I was smiling at the person because I could see how if I put my airports up or did anything it could be a sign of showing some sort of resistance and instead of having a little bruise on my leg I might have broken bone organization actual injuries because it didn't seem like he was slowing down and he was going to continue that tackle. Plainclothes police officer. T-shirt and shorts. He never identified himself. Didn't have a badge in any way showing, not around his neck, not on his belt, anything. The police officers that walked up later I saw a couple badges on bells but none were really displayed and no one identified themselves. I did didn't get one name out of anyone. And when -- how long were you held like that? What were you talking to them and telling them and stadium at Gillette. The patriots asking for the league to reitatens the two lo cker room workers accused of deflating tho footballs. Opening day today. Can't wait to see. A lot of fans been waiting for this for long time. Are you ready for some football? That is the question. We're going to begin in this half hour with former tennis star James Blake wrestled to the ground, handcuffed by New York police officers who mistook him for a criminal suspect. The former top ten player th ope S C used unnecessaforce, we're going to talk to him live in just a minute here I St io.ud first gio Benitez has the story. Reporter: This morning, James Blake one of the world's most legendary tenlasniye prs speaking out after being detained by police. Talk to anyone and I immediately talked to my wife. She was the first I talked to and she said, you know, what if this happened to me? And immediately I was Fuhr use because I thought about what I would be thinking if someone did that to my wife. If someone tackled her in broad daylight paraded her around in a busy crowded sidewalk in new York City with handcuffs with her cuffed behind her back and taking away her dignity and I just I couldn't accept that and I know that a lot of people have no voice to have any recourse and I'm lucky enough to have the opportunity to be sitting here with you to be able to tell this story and let meme know this happens too often and most times it's not to someone like me but someone that has no way -- No resources to get their story out like this and you really believe this was a case of excessive force. You're not making about racial profiling. You feel it was use of excessive force. Yeah, and I probably wouldn't even be so clear, be so indignance if it wasn't so obvious. It was so blatant. I was standing there doing nothing, not running, not resisting, in fact, smiling. If the video ever does come to the media, you can see that I'm smiling. And just minutes earlier a reporter happened to be walking by and recognized me and asked a few questions. The police officer could have easily asked and said can I see your license. Have the police reached out to you since? They say they've been trying to contact you. No, I haven't heard anything but I mean I'd be surprised if they were making that concerted of an effort since I've been contacted by a lot of media sources who found my number. What do you want from them. I'd like an apology. An explanation for how they conducted themselves because I think we all need to be held account football or our actions and police as well. They're out there going a very difficult job and I seen said that during the 15 minutes, I know you're doing a tough job and I respect that, I appreciate everything you do to keep us safe but I think you have the wrong person here and they didn't want to hear it. Didn't want to listen to that and I do think most cops are doing a great job of keeping us safe but when you police with reckless abandon you need to be held accountable and I think I'm hopefully going to let people know that some of them need to be held accountable and these that are doing police work the wrong way need to pay for those actions and be shown either the door or whatever retribution -- whatever they need to do to punish them. Right, as we said the vast majority do it the right way. It's those that don't that we need to put that to an end. Hey, James, thank you very much. Again for coming out here. My pleasure. Thanks for having me. All the best to you.

This transcript has been automatically generated and may not be 100% accurate.

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