Wow! Today is A Big Anniversary in MLB

On this day in 1976 one of the most important events occurred for the players.  Dave McNally and Andy Messersmith became free agents.  Later in 1976 the league agreed to have free agency begin after six years of MLB service.

The free agency market expanded quickly in the late 1970s.  Player salaries escalated quickly since owners fought to get the best free agents.  Many of the signings didn't work out, especially the signing of older free agents.  Check out the stats on some of the players signed.