I feel like Roy would refer to Cali O’Neill as a “tough little nut.”
She is tough, but she is also little, and has had some trouble in the back against faster/bigger opponents (especially the MSU game). I think she's going to be a huge asset to the program over her career, but right now I think Munson should be starting in the back in O'Neil's spot. Then probably start Straun in that midfield position vacated by Munson. Straun is too good to be on the bench based on what I've seen from her so far.
O'Neill should still get minutes in every game, I just think she needs to get a little stronger physically before being an every game starter. The skill is there, the toughness is there, but when we get into ACC play against the elite teams in the nation, I think she's going to struggle with some of the older, more mature, more physical attackers. We are also already a small team, so adding a little bit more size in the back would help.
I still argue for a 4 back line instead of the 3 back lineup. For now, I think Gaetino/Stratton at CB and O'Neill/Manning on the outside would be our best lineup, with Mara able to come in and give some breaks, and the option of shifting Gaetino to the outside as well if one of those players needs a rest. When we get back to full strength, I'd swap out Munson for O'Neill at one of the outside back spots. I'm taking Manning over O'Neill right now only because she seems more ready for the physicality that is going to come as the schedule gets tougher.
Honestly though, the biggest X factor in the back for us is Gaetino. Will she be the solid rock she was as a freshman, or is she going to continue getting caught out of position / losing her mark because she wants to be more involved in the attack...she has the strength needed from a CB, but also the recovering speed that our other two center backs do not have.
Edit: Dangit, I forgot about Alvarez....she should start when she's back...I think probably for Manning, she (Alvarez) seemed more comfortable playing on the outside last year than in the middle this year so far. We'll see...the good thing is that we've got a lot of options once everyone returns, but getting that back line sorted out is a huge priority for the late part of the season. I think Manning and O'Neill are going to be an amazing pair of outside backs if they stick around a few years. I also think both could be better playing wingback roles where they can get forward, but to play that way, we definitely have to have 2 CBs on the field. We can't have outside backs roaming forward with only 1 CB covering for them. That's exactly how MSU scored their first goal on us...Gaetino got pushed too far up, we had a turnover in midfield, and the player she should have been marking was off to the races after one pass.