CHARLOTTE, N.C. (AP) -- NASCAR said Jeremy Mayfield once again tested positive for methamphetamine and asked the federal judge who lifted the driver's drug suspension to reinstate the ban.
The positive result from a July 6 random test was included in a U.S. District Court filing Wednesday that included an affidavit from Mayfield's stepmother, who claimed she personally witnessed the driver using methamphetamine at least 30 times over seven years.
Mayfield once again denied ever using the illegal drug.
"I don't trust anything NASCAR does, anything (program administrator) Dr. David Black does, never have, never will," Mayfield told The Associated Press in a phone interview.
Lisa Mayfield said she first saw the driver use meth in 1998 at a race shop in Mooresville, N.C. She said Mayfield cooked his own drugs until the ingredient pseudoephedrine was taken off the shelves and it became too difficult for Mayfield to obtain the ingredients. She said her stepson then began to purchase meth from others.
"Between 1998 and 2005, I am personally aware that Jeremy used methamphetamines often," she said in her affidavit. "I was concerned about his heavy use and talked to his father about it. I saw Jeremy use methamphetamine by snorting it up his nose at least 30 times during the 7 years I was around him. Jeremy used methamphetamine not only in my presence, but also when we were both in the presence of others."
Mayfield angrily contested his stepmother's account.
"Now they got this lying (expletive) to tell lies about me, someone I am embarrassed even uses the Mayfield name. She's tried everything she can do to get money out of me, I won't help her, so I guess she found a way to get money from NASCAR by giving them an affidavit full of lies."
In the affidavit, Lisa Mayfield said she married Mayfield's father in a 2003 ceremony immediately following Mayfield's marriage to his wife, Shana.
Lisa Mayfield said the driver told her he used meth before a season-ending NASCAR awards ceremony while driving for Ray Evernham. She also said Mayfield used meth during a 1999 trip to Myrtle Beach that preceded a race at nearby Darlington Raceway.
"We left Myrtle Beach and traveled to Darlington for the race," she wrote. "I saw Jeremy using methamphetamine again when we reached Darlington."
Mayfield was suspended May 9 for failing a random drug test conducted eight days earlier. NASCAR later said he tested positive for methamphetamine.
He sued, and U.S. District Court Judge Graham Mullen issued an injunction July 1 that allowed Mayfield to return to competition.
Mullen based his decision on Mayfield's argument that the testing system is flawed and there was a reasonable likelihood of a false positive. He also gave NASCAR the right to test Mayfield at any time.
NASCAR did just that July 6 at Mayfield's home and said in its filings that the "A" sample had levels of methamphetamine consistent with habitual users who consume high doses.
"My only comment is that's their result," Mayfield attorney John Buric said. "But what I want you to keep in mind is that test was performed by the defendants in the case. Aegis Laboratories and Dr. Black are defendants in this case. I don't know if NASCAR has the right to ask the defendant to test Jeremy's urine sample. It ought to be done independently, but NASCAR didn't do that."
On July 6, Mayfield also had a second test at a lab chosen by his attorneys. Buric said that test came back negative but was sent back to the lab Wednesday for "reconfirmation" after the NASCAR test results were received.
The filing also claims Mayfield and his attorneys have failed to select a qualified laboratory to test the backup "B" sample.
Buric acknowledged the two sides are still haggling over a lab for the B sample and said NASCAR rejected the lab they picked.
Mayfield's lawyers also filed their response Wednesday to NASCAR's motion last week to overturn Mullen's injunction.
The brief, which didn't include the results of Mayfield's latest drug case, argued NASCAR was trying to "fashion the rules to their liking" by not meeting the requirements needed to overturn the ruling. Mayfield's lawyers argued Mullen had correctly ruled that Mayfield faced irreparable harm from a suspension and doubts remain about the accuracy of NASCAR's testing policy.
"NASCAR is absolutely corrupted by power, and it's untenable motion to stay should be denied," his lawyers wrote.