However, Dagg lost the ball in possession several times and did not bring any great impetus from the back.
Dagg has been slow to boil in recent Super 15 seasons although the All Black selectors have not dithered about picking him and reviving his standards. The 25-year-old Dagg has played 38 tests and 69 games of Super Rugby.
He joined the Crusaders from the Highlanders in 2011 but has struggled to deliver a run of quality performances during his term, one which has him off-contract at the end of this series.
In the 2013 campaign, Blackadder gave his fullback some prolonged selection leniency but got scant reward. His tolerance expired after another of Dagg's inconsistent games against the Rebels when he failed to get enough basic work done.
It was not a tough decision, Blackadder said, it was just made on form. His All Black fullback had not completed the simple rugby basics well enough.
The coach left that gnarly message until the Crusaders were deep into their season. Dagg responded strongly and had much form before starting 13 of the All Blacks' 14 tests last year.
Blackadder will hope to provoke a similar response but much earlier this time as the Crusaders search for a first title since Blackadder took charge in 2009.