About 7:20 p.m., two men who have a history of feuding with one another were at it again in the 100 block of Jones Street, Officer Albie Esparza said.
The verbal spat reportedly escalated to violence when Gerald Smith, 62, of San Francisco grabbed a milk crate and struck the 58-year-old victim over the head. The victim required stitches for a laceration on his forehead, police said.
Smith was arrested and booked on a single count of assault with a deadly weapon, Esparza said.
Esparza did not know where the crate came from, but said, “Anything that can be used to commit great bodily injury or death is considered a deadly weapon. If you are a kung-fu master, your fist can be a deadly weapon.”