Guess I'm qualified to expand on that. . . .
If, indeed, it is cellulitis (a sort of deep skin infection), then Staphylococcus aureus (or "staph") is one of the most common causes. Most of these infections can be treated as an outpatient. However, certain strains of the bacteria have developed resistance to conventional antibiotics and can be quite aggressive. (That's why we're trying to limit unnecessary exposure to antibiotics through over-prescribing). If his infection is due to a highly resistant organism, is spreading rapidly, or involves the tendons, bones, or other deep structures, he likely requires at least an initial course of IV antibiotics, which would be a reason for hospitalization. Some infections also require surgical drainage or debridement -- like abscesses (or "risens" for you true Southerners).
'Course, this is VOLUNTEER football. . . .and there's always "home nursing." :question: