Prior to the judge's sentencing, Gallo, a 24-year-old construction worker, apologized for the crash.
Gallo's blood-alcohol level registered almost three times the legal limit on April 9, 2009, when he drove his car through a red light at an Orange County intersection and T-boned the car in which Adenhart and three of his friends were riding.
In addition to Adenhart, 20-year-old Courtney Stewart and 25-year-old Henry Pearson were killed in the crash. Jon Wilhite, a fourth passenger, was severely injured.
When Gallo spoke, he fought tears while accepting responsibility for the three lives he ended.
Gallo was convicted in September of three counts of second-degree murder and single counts of drunk driving, hit-and-run driving and driving under the influence of alcohol and causing great bodily injury. Judge Richard Toohey sentenced Gallow to 15 years to life on each of the murder counts, with the additional six years added for the other crimes.
Gallo's attorney, Jacqueline Goodman, had attempted to get her client one sentence of 15 years to life, maintaining that Gallo never intended to hurt anyone. According to Goodman, Gallo's stepbrother was supposed to have been the designated driver that night, but Gallo drove after his stepbrother became too drunk to drive.
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.