Patellar tendinosis is a significant debilitation in collegiate and professional athletes that frequently leads to reduced performance. The quantitative magnetic resonance imaging (MRI) technique of T2* mapping is well suited to evaluate patellar tendinosis. This study evaluated regional differences of T2* values in collegiate basketball players pre-season. Short and long T2* values were both prolonged proximally, and no correlations were found with corresponding morphologic imaging. Continued longitudinal imaging will permit the evaluation of the development of tendinosis or micro-tears.