Since tonight's scrimmage was closed to the public, the only observations I can make are based off the stats and updates from Twitter.
Quarterback Play
First things first, it is worth noting that Kyle Flood gave Hayden Rettig the start.
— Tom Dienhart (@BTNTomDienhart) August 23, 2015
Now on to the stats from both QBs, courtesy of NJ.com
Hayden Rettig: 10/17, 144 yds, 1 TD, 0 INT, 106 rating
Chris Laviano: 10/15, 123 yds, 3 TD, 0 INT, 138.38 rating
Wow.
From the looks of it, Hayden Rettig had seemed to position himself to be named the starter.