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In the diner scene, when Pappy Jack gets Tommy to agree to the amateur bout, Tommy alludes to winning the Golden Gloves "back in Bridgeport." Brian Dennehy was born in Bridgeport, CT.
James Marshall did two hours of boxing, one hour of weight training and one hour of jogging for five days a week for four months.
Trailers and TV spots gave James Marshall an "introducing" credit, despite the fact that he had several acting credits to his name, notably his role as James Hurley on Twin Peaks (1990).