The face-to-face confrontation involved in the crime of robbery renders vast amounts of financial, physical, and psychological injury in the United States. This study developed hypotheses from existing literature regarding salient situational factors associated with the prevalence of overt physical coercion during commercial and street robberies. The study examined the effect of situational and personal characteristics on robber' use of coercion, with data coded from police reports of 1,281 street and commercial robberies in one precinct of Detroit, Michigan, between 2000 and 2003. The research results are relatively consistent with findings from the literature on robbery in the last 40 years: Street robberies involve a greater prevalence of physical force than do commercial robberies; guns reduce the likelihood of physical force; and victim resistance increases physical force. Additionally, characteristics of victims and offenders play a secondary role in predicting whether physical coercion is brought to bear on the victims of robbery. (Contains 5 tables.)