Dawborn found the forefront using the ball, declaring two early wickets as openers Jack Jessop and Matthew Whaley were ignored for single figures each.
Batting first, Cambs designed a slow begin to their innings using the early departures of Asim Butt, Ben Cruz, Michael Pepper and Ben Seabrook.
Dawborn required the wicket of James Thompson to depart the hosts at 108 for six, getting the very first day#8217;s play to some close.
Cambridgeshire lead Northumberland by 120 runs after the very first day of the Unicorns Championship, Eastern Division match in Newcastle-upon-Tyne.
Oliver McGee and Tindale will resume today with batsmen yet to attain.