2015-2019: German Research Foundation (DFG) and Swiss National Science Foundation (SNF), Labour market effects of sports related public expenditures (assignment PA2500/1-1), together with Michael Lechner, University of St. Gallen.
2015-2016: Fédération Internationale de Football Association (FIFA), The determinants of demand for overseas soccer broadcasts in the USA (research grant), together with Georgios Nalbantis, University of Tübingen.
2015: VfL Wolfsburg, Social media communication, together with Christoph G. Grimmer, University of Tübingen.
2013: Major League Soccer, L.L.C. (MLS), Competitive balance in Major League Soccer.
2011-2012: Union of European Football Associations (UEFA), The fans’ view on competitive balance (research grant). ► link
2011-2012: Hamburger Sport-Verein e.V. (HSV), Consumer behavior of club members. ► link
2009-2011: Federal Ministry of Finance (BMF), The fiscal political importance of sports in Germany (tender fe32/09), together with Christoph Breuer, German Sport University Cologne. ► link
2007-2008: Ernst & Young AG, Different studies on competitive balance in European professional football, together with Christoph Breuer, German Sport University Cologne ► link