PITTSBURGH -- The is the fifth in a series that reviews the Steelers' drafts under general manager Kevin Colbert and coach Mike Tomlin.

Next up is the 2011 draft.

Total picks: 7

Picks still with the team: 4

Best pick: DE Cameron Heyward. The penultimate pick of the first round didn't play much his first two seasons but really emerged in 2013 when he cracked the starting lineup after the first four games. Heyward established himself as one of the Steelers' best defensive players as well as the cornerstone of a line that is in transition. Heyward played well against the run in 2013 and also provided the Steelers with an inside pass-rusher as he led the team with 31 quarterback pressures and also recorded five sacks. The former Ohio State star is among the players the Steelers will build around on defense.

Worst pick: CB Curtis Brown. The third-round selection never developed into more than a special-teams contributor and the Steelers released him last month. Brown never started a game in three seasons and was credited with just eight tackles and one pass defended in 34 career games. The Steelers' miss on this pick is one reason why they are thin at cornerback -- and why they are likely to draft two players at that position this year.

Best value pick: CB Cortez Allen. The fourth-round selection from The Citadel has the potential to become a shut-down cornerback and has at least shown, when healthy, that he can be a quality starter. Allen has similarities to Ike Taylor, from the round they were taken in to the fact that each came from a small school and developed fairly quickly. Like Taylor, the 6-1, 196-pound Allen has good size, and he rebounded from a high-ankle sprain last season to intercept two passes and lead the Steelers with 14 passes defended.

Also of note: Right tackle Marcus Gilbert, a second-round pick, was the only Steelers' offensive lineman to start every game last season … Guard Keith Williams, a sixth-round pick, is the only player in this class never to have appeared in a game for the Steelers. Williams played two games for the Bills and is currently toiling in the Arena Football League … Running back Baron Batch created a buzz during his first training camp before tearing his ACL. Batch rushed for 49 yards and a touchdown on 25 carries in 2012 but the Steelers released the seventh-round pick last August and he remains unsigned.

Final analysis/grade: This quietly has turned into a decent draft for the Steelers, especially if Gilbert convinces the team he has a long-term future in Pittsburgh. Heyward and Allen are players the Steelers will build around on defense and the only glaring miss was the Brown selection. I'll give the Steelers a B- for this haul.