Yes, Giants still have bigger pieces to add

There is no NFL rule that requires free agents to sign within the first 24 hours of the new league year. So those New York Giants fans out there who are upset their team didn't join in Tuesday's big-name trade-and-signing frenzy can rest assured the team is still at work on improving its roster. The crew that came aboard Tuesday is not the totality of the offseason haul.

The Giants agreed to terms with six players Tuesday, and it's entirely possible none of the six will start for them in Week 1. Yes, J.T. Thomas or Jonathan Casillas could conceivably win a starting linebacker spot, but they weren't necessarily added with that in mind. And yes, a camp injury could surface that requires Marshall Newhouse to start a game or two at tackle, but he was signed as a backup. Shane Vereen is a third-down running back, Dwayne Harris is a kick returner and bench receiver, and Chris Ogbonnaya is a back-of-the-roster running back who's no lock to make the team.

Which is all fine. The rosters have to have 53 guys on them, and not everyone who signs is going to be a starter. But nothing that happened Tuesday changes the Giants' need for at least one starting safety, a couple of defensive linemen and another starter on the offensive line.

Fear not. The Giants remain in contact with the agents for free-agent safeties Rahim Moore and Ron Parker, each of whom has several teams interested and is taking his time. The Giants continue to poke around for defensive line help, though with options drying up there they may need to get creative. Defensive tackle Dan Williams had been a target of theirs, but he's visiting Oakland. Derrick Morgan is one of the top remaining available pass-rushers and is visiting Atlanta. Visits don't equal signings, but more often than not they lead that way, and it's likely those guys will get crossed off the list fairly soon.

As for offensive linemen, it's quiet on that front. I still can't rule out St. Louis tackle Joe Barksdale, but the Giants are looking at various options at tackle and guard in an effort to improve their run blocking. They're also still chatting with a couple of their own free agents, including safety Stevie Brown.

So there's more to come on the Giants' front, I promise. Will keep you posted best I can.