Sheffield ended the challenge of Batley in the Kingstone Press Championship play-offs after some late pressure saw the Eagles claim a 16-0 victory.
The Bulldogs escaped relegation from the second tier with victory over Doncaster on the final day of the league season last week.
Despite resisting for over an hour, Batley eventually succumbed to the defending champions, who finished fifth in the table and have now advanced to week two of the play-offs.
Neither side could make any breakthrough until the 64th minute, when Dominic Brambani finally got the first points on the board with a penalty.
Etu Uaisele scored a try five minutes later although Brambani’s failure to add the extras meant the game was still very much alive heading into the final 10 minutes.
But it was the Eagles who dominated in the closing stages as Quentin Lauulu-Togagae’s converted try doubled Sheffield’s lead before Uaisele crossed the whitewash three minutes from time to make sure there was no way back for Batley.