The New York Giants never used to use high draft picks on the offensive line. During a 23-year stretch from 1990-2012, the Giants used a grand total of one first-round pick and three second-round picks on offensive linemen. The first-rounder was Luke Petitgout in 1999 and the second-rounders were Scott Gragg (1995), Chris Snee (2004) and Will Beatty (2009).
Finding David Diehl in the fifth round in 2003 helped mitigate things a bit, but that's nearly a quarter-century's worth of ignoring offensive line in the early rounds, and the Giants paid the price. After the Super Bowl XLII champion line got old, there weren't ready replacements, and Eli Manning's protection became a major source of trouble.