Nico Siragusa is starter material...Dude is a beast, who played every game that he was eligible in college. Look at his stats(or game film), he is not only a piledriver, but extremely durable to boot. I could easily see him starting at LG, and moving Alex Lewis to RT.(remember, Lewis played tackle in college, so not such a big transition for him.) As far as center, I wonder that Mangold and the Raven's don't have a handshake deal that he signs after June 1st. We'll have to wait and see...
Hope you are right but I do not have much confidence in him to start. Here is the NFL weakness report on him, pay particular attention to the comment pertainng to his reach ability on Middle LBR's... "Labors coming out of stance. Tends to pop upright and is delayed in his lateral movements. Reach blocks and cut-off blocks on middle linebackers are mission impossible. Hands are a little slow with inconsistent placement. Impatient with punch and will get caught lunging. Has to work to keep weight balanced in pass sets. Unable to punch and mirror, allowing active rushers a pathway to his edge."
Consider the source. This is what happens when you just go to NFL website and read the "scouting report". That particular report was written by a 24 year old kid that has never played football. While I'm not a big proponent of PFF, at least you can tell they actually watched game tape: "What he does best: Siragusa can dominate defenders, particularly in gap scheme runs on the playside of power; earned a positive grade on 22 percent of plays on the playside of power, working very well on double-team blocks taking defensive linemen off the line of scrimmage. Had third-highest pass-blocking efficiency among FBS guards; excelled in particular against bullrushes from defensive tackles. Consistently found his targets and neutralized them at the second level and on pull blocks, especially kicking out defenders when pulling on power; Siragusa earned a positive grade on 23 percent of his pull blocks on power. One of the most efficient run-blockers in college football in 2016, Siragusa was downgraded on only 7 percent of his run blocks last season. Biggest concern: Struggled at times with cutoff blocks on the backside of outside zone. The level of competition he faced leaves questions for how he will cope with the step up to the NFL level. His worst grade of the season by far (51.6 overall) came in the bowl game against Houston. Siragusa lost his opportunity to allay some of these fears at the Senior Bowl after suffering an injury on the first day of practice. Bottom line: Siragusa was one of PFF’s most productive guards in 2016. At his best in a gap scheme Siragusa is powerful at the point of attack and can drive defenders off of the line of scrimmage to disrupt linebackers at the second level just as well as he can drive them out of the play as the pull blocker on power. " So, yes, he struggles with reach blocks and cut-off blocks but only on outside zone stretch plays. Btw, the Ravens RARELY run those and we are more of a gap - power man blocking scheme.