This research addressed volunteering in the context of an international sports event. The functional approach assumes that matching volunteers’ motives and environmental affordances predicts favorable outcomes. We tested this assumption with respect to event volunteering and proposed two additional motivational functions that may be served by event volunteering: good citizenship and excitement. The results show that the total match index (TMI) proposed by Stukas, Worth, Clary, and Snyder accounted for additional variance in satisfaction and the intent to volunteer again, above and beyond the variance explained by motives and affordances alone. Furthermore, beyond the TMI, matching the excitement motive accounted for additional variance in outcomes. The conceptual innovation of excitement as an intrinsic volunteer motive was supported by a theoretically consistent moderator effect: The association between autonomy and volunteer outcomes was stronger for volunteers with a high excitement motive. Theoretical and practical implications regarding the design of volunteer jobs are discussed.