The TringRugby first team battled to a five-point victory over Thurrock despite playing the majority of the second half with 14 men.
Tring debutante Will Mitchell slotted three early penalties as Thurrock persistently infringed, but the visitors hit back at a five-yard scrum with an easy try.
Tring quickly returned the favour as Tom Newton went under the posts unopposed, before hooker Grant Wattleworth scored from close range following a five-yard line out.
Tring went into the break 21 -10 up but, just two minutes into the second half, Nick Radley received a second yellow card.
The next Tring attack left Sam Barnes with work to do but he danced round four defenders to score and relieve the pressure on his side.
Thurrock hit back with 14 unanswered points from Frankie Neale, but Tring halted the visitors’ momentum with a try from Laurence Tauasosi.
A Will Mitchell penalty put some much-needed space in the scoreline before Neale and Zak Michalski traded tries as Tring ran out 45-31 victors.
Next up for Tring is a trip to Basingstoke on Saturday, before they welcome Guernsey to Cow Lane on December 7.
Elsewhere, the TringRugby Academy progressed to the fourth round of the National Colts Cup after beating Bury St Edmunds 16-10 in a tough away fixture.
Two penalties from kicker Sam Masters gave Tring a 6-3 half-time lead, and they wrapped up the win after the break with tries from John Preston and Ed Ellson.