Daryle Pollock was ordered Friday to spend the next 25 years in state prison for fatally beating his live-in girlfriend's 16-month-old daughter.
A prosecutor called the crime "one of the worst cases of child abuse" he has seen in the last two decades.
Apologetic and admitting the death was "my responsibility" as he baby-sat Kyla Jones last Jan. 3, Pollock, 29, told State Supreme Court Justice Mario J. Rossetti he is still unable to explain his actions.
Rossetti imposed the maximum prison term on Pollock's Oct. 14 guilty plea to first-degree manslaughter, telling him he had considered leniency until he reviewed the records of the beating he inflicted on on the child.
During the sentencing, Deputy District Attorney Frank A. Sedita III told the judge he couldn't understand the letters sympathetic to Pollock that had been sent to court by the infant's mother and grandparents, given the severity of the beating.
Sedita told the judge an autopsy revealed the infant had been beaten so severely her liver was "pulverized." Doctors determined the injuries she suffered were equal to "having been tossed out of a 20-story building," Sedita told the judge.
The prosecutor said Pollock repeatedly lied to Cheektowaga police by claiming the girl's injuries were the result of her falling down a flight of stairs, something medical tests proved could not have caused such injuries.
Attorney Robert N. Convissar said Pollock took the plea to spare everyone "the pain" of a trial.