Both men were criminal gang members when they killed the toddler in January 2016.
The office will host its first-ever Alumni Celebration from 5-7 p.m. Nov. 29.
Sentencing for both men is scheduled to be set the week of Sept. 4.
Sentencing is scheduled to be set the week of Aug. 20.
Handy attacked a cellphone store employee with a knife in March 2017.
With the indictments, each defendant faces a sentence of mandatory life in prison upon conviction.
His 10-year sentence will be followed by 10 years of probation.
Hayes, Richardson Found Guilty of First-Degree Murder in Drive-by Shooting of 22-Month-Old Aiden McClendon
Both men now face a maximum of life in prison.
Sentencing is to be set the week of June 25 by the Honorable Linda McCallum.
The SAO recently held its annual awards ceremony that showcased a year of exceptional work.