MARCUS Bontempelli started the show and his midfield sidekicks Jack Macrae and Bailey Smith finished it.
SWANS v BULLDOGS Full match coverage and stats
In his most impressive outing in his infancy as captain, Bontempelli inspired the Western Bulldogs with a damaging first half to set up a 28-point win over Sydney on Thursday night.
In a massive blow for the Swans, the loss was compounded with fears that ruckman Sam Naismith had suffered another ACL tear.
Bontempelli (18 disposals, two goals) twice went back with the flight in the second term to result in two goals as the Dogs jumped to a 30-point half-time lead.
Tom Papley (four goals) sparked somewhat of a fightback for the Swans to get within 20 points early in the final term before the Dogs steadied to win 10.7 (67) to 5.9 (39) at the SCG.
Macrae (22 disposals) shook off a George Hewett tag, while Smith (20 disposals) combined with ruckman Tim English (22 disposals) as the Dogs were far cleaner around stoppages.
The Swans lifted their work-rate and showed more dare after half-time, but it was far too late against a Dogs line-up reduced to two rotations in the third quarter.
Both sides wore black armbands and observed a minute's silence pre-game to honour Australian Football Hall of Fame Legend John Kennedy snr, the grandfather of Swans co-captain Josh Kennedy, who played his 250th AFL match.
Bont puts on the cape
Marcus Bontempelli single-handedly lifted his football club in the second quarter. The Dogs skipper took a courageous mark running back with the flight and into the path of Swans star Isaac Heeney at half-back midway through the term. The passage set up the Dogs' fifth goal before Bontempelli repeated his efforts deep in attack to snare another major just moments later. His six-disposal quarter was capped with a goal from beyond the arc to give the Dogs full momentum into the main break. After the Swans opted to send tagger George Hewett to Jack Macrae in the first half, Swans defender Callum Mills was then sent to Bontempelli.
Concerns for Dogs forwards
Spearhead Aaron Naughton will head for scans after limping from the ground with a nasty ankle injury late in the first term. After nursing a knee complaint through pre-season, the 20-year-old appeared in pain and took no further part in the match. Fellow forward Sam Lloyd injured his right shoulder early in the third quarter and sat out the rest of the second half. Bailey Dale was then put on report for a wayward spoil on Robbie Fox deep in defence. However, his forearm only made contact with the Swan's shoulder and should escape Match Review scrutiny.
Did the Swans get it right at selection?
After Callum Sinclair and Hayden McLean collected the win over North Melbourne's Todd Goldstein last week, the Swans opted to keep both big men with No.1 ruckman Sam Naismith returning. Naismith was beaten by Dog Tim English, before the Swans big man appeared to rupture his ACL for a second time. Sinclair (199cm) and McLean (197cm) offered little in attack and were forced to watch Tom Papley play a lone hand. The three Swans talls failed to kick a goal, while the Dogs kicked four goals generated from their defensive end in the first half alone to set up the win.
SYDNEY 0.1 1.3 2.8 5.9 (39)
WESTERN BULLDOGS 3.2 6.3 7.4 10.7 (67)
Sydney: Papley 4, Kennedy
Western Bulldogs: Bontempelli 2, Dale, Naughton, Lloyd, Vandermeer, Bruce, West, Macrae, English
Sydney: Papley, Parker, Heeney, Kennedy, Lloyd
Western Bulldogs: Bontempelli, Smith, Macrae, English, Daniel, Crozier
Sydney: Naismith (knee)
Western Bulldogs: Naughton (ankle), Lloyd (shoulder)