Anthony Castonzo, the Colts' second-year left tackle out of Boston College, knows what it feels like.
But blocking for Luck has its benefits for Castonzo, who went to Lake Zurich High School. Luck is pretty adept at avoiding pressure if a pass rusher happens to slip by an offensive lineman.
"Different quarterbacks do things differently," Castonzo said. "Andrew slides around a lot. He moves around and kind of makes me right no matter what I do from a blocking standpoint. He's able to move around real well."
Luck might have to be on the move a lot because he is playing behind an unproven offensive line. The Colts have three new starters on the right side in tackle Winston Justice, guard Mike McGlynn and center Samson Satele.
Castonzo is the linchpin.
"I think the line is coming together well," Castonzo said. "We are communicating really well. I think we're building something good."
Castonzo never got to block for Peyton Manning because Manning sat out all of Castonzo's rookie year. But like everyone around the Colts, Castonzo has been impressed with his new quarterback.
"He is a great leader," Castonzo said. "He's very even keeled which is great to have in a quarterback. He keeps his cool. After we went down 14-0 (to the Steelers) the other day, he comes back to the huddle confident, with a smile on his face. He's ready to get us pumped up and get us going. To get that leadership from a rookie is pretty awesome."
Now that Castonzo is a starter in the NFL, he no longer moonlights as a delivery man at his parents' Italian restaurant in Hawthorn Woods.
He said his father and mother sold the eatery so they could travel to all of his games.