How does Kenyon Martin's tirade compare to the all-time greats?

As you may know by now, audio has surfaced of Kenyon Martin’s April Fool’s Day tirade, following his discovery that someone had filled his car with buttered popcorn as a prank. Here’s the audio, with the many, many bad words bleeped for your workday protection. But how does Martin’s verbal explosion rate on the all-time sports Richter scale? We give it a 6.8, which as you can see, does not come close to putting it at the top. A fine effort, however.
A sampling of all-time best tirades, with Richter scale grading:

* Lee Elia, Chicago Cubs, 9.0. April 29, 1983. A day that will live in infamy. NSFW! [audio]

* Bobby Knight, Indiana University, 8.6. “I am sick and tired of losing to f—— Purdue!” NSFW. [audio]

* John Chaney, Temple, 8.2. He will kick your ass, John Calipari! [video]

* Tommy Lasorda, Los Angeles Dodgers, 8.0. Hey, you’re the one who pitched to Kingman. Don’t take it out on the reporter. NSFW. [audio]

* Chris Berman, ESPN, 7.7. Did Mr. Berman ever get his question answered as to whether anyone there had ever worked in TV before? NSFW. [video]

* Dan Marino, Inside the NFL, 7.0. Hey, I thought outtakes were supposed to be funny. [video]

* Mike Gundy, Oklahoma State, 6.5. Basically, Gundy wants the press to let the coaching staff decide which players are criticized in print. Sounds fair. [video]

* Mike Singletary, San Francisco 49ers, 4.1. No profanity, but extra points for being six kinds of crazy. [video]

* David Ortiz, Red Sox, 1.9. Very brief. No audio. [transcript]

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Kenyon Martin Sounds as Pissed as Reported [You Been Blinded]
Hell hath no fury like Kenyon Martin pranked [Out of Bounds]