"One's a born liar, the other's convicted" - What does this quote mean?!

Said by Billy Martin of Reggie Jackson and George Steinbrenner. I never understood it… Thanks

George Steinbrenner was convicted of illegal campaign contributions to Richard Nixon in 1972 (an offense that got him suspended from baseball for a time).

So, Martin was saying “Reggie Jackson and George Steinbrenner are both no-good, dishonest, backstabbing SOBs- and in Steinbrenner’s case, there’s a criminal record to prove it.”

Could he have possibly meant “converted?” It would make a lot more sense.

Martin always took great care to disassociate himself from the criminal element.

Converted from what?

If the quote said"One’s a born liar, the other’s converted to lying"? is that what you mean, 'cause that does seem to make more sense, in general.

Makes more sense to me as posted–"[Reggie Jackson]'s a born liar, [George Steinbrenner has been] convicted [of a crime, so they’re both no-good, dishonest, backstabbing etc.–but for different reasons].