Draft position can indicate the success of an offensive lineman:
Pro Bowl seasons from 2000 to 2012, by draft round selected
First three rounds: 75.9%
Round 4 or later: 12.6%
Undrafted: 11.5%
Pro Bowl seasons from 2013 to present, by draft round selected
First three rounds: 83.7%
Round 4 or later: 10.5%
Undrafted: 5.8%