Pass-Blocking, Run-Blocking, Good Hands, Footwork
Anthony Castonzo has been the anchor for this offensive line for the past few years and (hopefully) beyond the 2019 season. Castonzo is a must for this team as durable and good tackles, even more so, blindside, are hard to come by in the draft.
Offensive linemen are coached differently in college than they are in the NFL and techniques are different so finding one that can start day one is very, very hard. Eric Fisher is one that comes to mind who was one of the most NFL ready in years and even he struggled to go up against the more elite edge defenders.
Castonzo is on an offensive line that has gone from one of the worst of the previous decade to one of the best in a matter of years with Chris Ballard and Frank Reich at the helm of this team. Together with Quenton Nelson, they create a normally weak-side running direction for most teams into a strength for this one. Not to mention in 767 snaps he’s only had 1 penalty and allowed 3 sacks.
Castonzo is a must sign for the Colts this offseason and probably one to sign before free agency officially opens so he doesn’t hit the open market.