Datchworth valiantly fought back to within three points of the hosts but could not find the decisive score as they lost for the second successive week.
Hockey, rugby and football matches across Welwyn and Hatfield were postponed over the weekend due to frozen playing surfaces.
Big things are afoot at Hobbs Way under the orchestration of coach Ian Matthews and manager Mike McKay. Not that the former is willing to take the credit for Welwyn’s excellent start to the season.
Datchworth went into 2015 full of optimism after beating Welwyn prior to the Christmas break, and feeling refreshed and ready to make a push up the London North West 3 table.
Welwyn coach Ian Matthews bemoaned his side and the conditions as they exited the RFU Senior Vase to Bromley at the fourth round stage.