In his latest court filings, Mack claims that Chesnoff and Freeman assured him he would win, only telling him to plead guilty after they had been paid their fee. Mack said his will was worn down because of dehydration, heat exhaustion, back pain and lack of blood sugar. He also claims that his lawyers forged his signature on his plea agreement.
"They sold him down the river," Mack's brother, Landon Mack, told ABC News.
Darren Mack's girlfriend, Alecia Biddison, said, "We feel very strongly that there is overwhelming evidence that should grant Darren a new trial."
Prosecutors in court filings called Mack's latest allegations "bizarre," saying they are irrelevant to whether his guilty plea was valid.
"There is nothing in the record to show that the defendant was coerced or tricked into pleading guilty by a promise of leniency," prosecutor Christopher Lalli wrote. "He understood all the consequences of that plea."
The court hearing is expected to last through the end of the week.