Players taken in the fourth round or later have long odds of having a long NFL career.

Of the 790 players drafted in the fourth round or later between 2009 and 2013, only 311 (39 percent) remain with their original teams, according to ESPN Stats & Information. Some have jumped to other rosters, but on average, the shelf life of a low-round draft pick is short. Here is the yearly breakdown: 

2009: 11 of 155 still with drafted team 
2010: 17 of 157 
2011: 63 of 158 
2012: 86 of 158 
2013: 132 of 162 

In other words, a player drafted between the fourth and seventh rounds has about a 50-50 shot of still being in his team's plans after two years.