This thesis examines how global sports marketing firms pursue domestic and international sponsorships by balancing high-growth opportunities with financial, cultural, and operational risks. Drawing from insightful market data and a focused case study of Fenway Sports Management, the research analyzes how firms identify high-ROI partnerships, manage uncertainty, and expand into emerging markets. International sponsorships operate at the intersection of sports marketing, global strategy, and brand management, yet academic literature rarely explains how firms navigate exchange rate volatility, regulatory differences, cultural variation, and geopolitical instability. By integrating a risk-opportunity framework with ROI measurement models, this study addresses that gap and evaluates how sponsorships can diversify revenue and strengthen long-term competitive advantage. Insights are supported by industry data from Deloitte, PwC, Nielsen, the IMF, and the World Bank, as well as interviews with FSM leadership regarding partnerships with Liverpool FC, the PGA tour, and potential growth opportunities. The literature review highlights the shift from transactional visibility-based sponsorships to strategic, value-aligned partnerships emphasizing trust, activation potential, and cultural resonance. It also underscores the importance of financial risk management tools such as hedging, diversification, and contractual safeguards. Ultimately, this thesis aims to clarify what makes a sponsor an attractive strategic target, how firms measure and maximize ROI, and which global markets present the strongest future opportunities for FSM and similar organizations.