The fantasy value of cornerbacks is highly volatile for each player year over year but quite flat as a group throughout each season. Theories about what makes a cornerback a good IDP option abound.
Some fantasy gamers seek a cornerback playing press-man coverage in front of two deep safeties. Others prefer cornerbacks who play zone. The latter type, facing the line of scrimmage, can better assist with run defense. Many gamers also target rookies as well as teammates of renowned “shutdown” cornerbacks.