This document contains information about salaries in various professional sports leagues and teams. It lists the average salaries in sports leagues like the NBA, NFL, MLB, and others [SENTENCE 1]. It also provides data on the highest-paid players on MLB teams in 2013, with Alex Rodriguez as the highest earner at $30 million [SENTENCE 2]. Additionally, the document examines public opinions on issues like whether injured players deserve their full salaries if not playing and if players are earning worth relative to their performance [SENTENCE 3].