David Nugent netted twice in the first half as Derby County defeated Skybet Championship newcomers Bolton 2-1 at the Macron Stadium.
The only surprise was Gary Rowett's visitors did not score more goals against last season's League One runners-up.
And they were ruing missed earlier opportunities when Gary Madine pulled one back for the Trotters in the second minute of stoppage-time.
But it was too little too late for an other wise disappointing Wanderers side remaining without a win since their return to the second tier.
Derby went ahead with their first notable attack. after eight minutes Matej Vydra played in a low pass towards the six yards' box and Nugent simply guided the ball beyond Mark Howard for a sweet finish.
It was the 32-year-old striker's first goal of the new campaign and pricked Wanderers' early game optimism.
Nugent, whose career began just down the road in Bury, did not have to wait too long to double his tally.
Johnny Russell, already causing problems down the home left, crossed from the dead ball line and Nugent was unmarked to head in from four yards after 21 minutes.
Derby were cutting open the Trotters at will and should have made it 3-0 after 28 minutes.
This time Nugent turned provider with a defence splitting ball for Vydra.
The ex-Watford man ran into the area unopposed but his final left-footed shot did not match the approach and Wanderers survived.
Four minutes later rampant Derby carved out a fourth opportunity. Andre Wisdom floated over a ball from the right flank and Vydra's left-footed volley from 12 yards fizzed fractionally over the crossbar.
Wanderers were shambolic and Nugent had legitimate appeals for a penalty rejected after clashing with Mark Beevers. Then Jem Karacan was booked for handball after being caught in possession in his own half.
Even right-back Wisdom joined in the onslaught, racing unchecked into the area before scuffing a final left-footed shot beyond an upright.
Parkinson's half-time response was to go like-for-like with his first substitution, taking off Adam Armstrong and replacing him with Adam Le Fondre.
Bolton were brighter albeit with a reliance on a long ball up to Gary Madine. But they got lucky when Mark Beevers tripped Russell on the edge of the area.
Referee Stephen Martin awarded a free kick but gave the big defender only a yellow card instead of a potential red.
With the Rams in cruise control Rowett introduced new B#5million man, Tom Lawrence for a debut after 67 minutes following his arrival from Leicester.
Derby keeper Scott Carson went the entire 90 minutes without a shot to save and could do nothing to prevent Madine's late consolation.