Refs blew 2 1st down spots. The 1st was Lamar on the run where he stretched the ball out. Unless the ref thought he stepped out. The 2nd was the Agholor play where he had the ball at the marker then tumbled 2 yrds beyond it. Both were on the same side of the field.
The Lamar play, I believe the rule is "where the ball crosses the sideline" in the air, not where it is when his foot comes down out of bounds. I could be wrong but I thought the ref expert even said that afterwards. My kids were also talking at the time of his explanation so I might have misheard. Anyway, if I'm correct, that "where it crosses the line in the air" aspect is REALLY difficult to confidently overrule even on replay I think, unless you have a direct overhead view too.
The Agholor thing though, to me, is egregious on both sides, the ref spot and the Ravens lack of challenge. That seemed pretty obvious live. That said, when the chains don't move and the markers don't say 1st down, YOU HAVE TO REALIZE there is an issue as the head coach and do something about it. Him saying they (him / Ravens staff) didn't realize they hadn't given the first down is RIDICULOUS and incompetent. Same dude who took a useless timeout with him to the off-season at Foxboro back in Jan 2012 when the FG unit rushed on the field late (BECAUSE NOBODY REALIZED WHAT DOWN IT WAS).
Ugh. Same crap with him year after year. It's gonna bite them in the ass at the worst time unless the players just totally outplay teams in the playoffs from start to finish.