Police say the two got into a fight in an apartment in the 3100 block of Clay.
The assaults took place within a five-mile area late Monday and early Tuesday.
Nineteen-year-old Thearon Maxey was found lying unconscious on the front porch of a home in the 3100 block of Clay.
A homeless man was stabbed to death outside the central library in downtown St. Louis yesterday morning after an altercation, across the street from Christ Church Episcopal Cathedral.
Andrew Lynn Barnett was charged Friday with felony assault and armed criminal action after the Thursday morning stabbing of 32-year-old Kristopher Schmeiderer.
Police say several people witnessed a stabbing on Tuesday night in north St. Louis, but the assailant is still at large.
A St. Louis County woman is charged with felony assault after reportedly stabbing a Normandy police officer in the face with a steak knife.
An argument escalated into a stabbing Saturday in a home in the 3600 block of South Compton.
Two victims are dead, two are in critical condition, including an 8-year-old boy.
Sheriff says suspect called 9-1-1. Is in custody.