Luca Paolini won stage three of the Tour of Britain from Leeds to Sheffield, holding off a brave challenge from UK rider Russel Downing.
National road champion Downing was in the lead group on the descent into his home city but lost vital ground on Paolini when he overshot the last bend.
German Brian Schmitz of T-Mobile stormed through to take second.
But Ireland's Roger Aitken, along with the Irish team boss, was disqualified for holding on to the team vehicle.
Paolini's win puts him in the green points jersey while team-mate Belgian Nick Nuyens retains the yellow jersey.
New Wales national coach Julian Winn took the polka-dot jersey after winning all four climbs on the 167.5km stage.
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Grandstand, BBC Two, Sunday 11 September, 1335
Downing, 26, admitted he was disappointed not to take the victory.
"It's the stage I wanted to win with it being my home town," he said.
"But it's the toughest one and it doesn't make it easier, training on those roads every week."
Stage three results:
1 Luca Paolini (Ita) QST Quick Step-Innergetic 4hrs 27min 24secs
2 Bram Schmitz (Ned) TMO T-Mobile same time
3 Russel Downing (Gbr) Recycling.co.uk/Litespeed at 2 secs
4 Tony Bracke (Bel) LAN Landbouwkrediet Colnago same time
5 Ryan Cox (Rsa) TBL Barloworld-Valsir same time
6 Julian Winn (Gbr) WAL (Wal) same time
7 Jose Luis Martinez Jimenez (Spa) ECV Comunidad Valenciana at 8 secs
8 Dean Downing (Gbr) at 10 secs
9 Wesley Van der Linden (Bel) JAC Chocolade Jacques T-Interim at 11 secs
10 Geraint Thomas (Gbr) Gbr Great Britain at 1min 5 secs
1 Nick Nuyens (Bel) QST Quick Step-Innergetic 12hrs 54min 21secs
2 Michael Blaudzun (Den) CSC Team CSC at 7 secs
3 Molina Cherro (Spa) Javier ECV Comunidad Valenciana at 10 secs
4 Bert de Waele (Bel) LAN Landbouwkrediet Colnago at 16 secs
5 Phil Zajicek (USA) NIC Navigators Insurance at 19 secs
6 Ben Day (Aus) MRB Mr Bookmaker-Sports Tech same time
7 Frederik Veuchelen (Bel) JAC Chocolade Jacques T-Interim at 22 secs
8 Yanto Barker (Gbr) DFL Driving Force Logistics at 1 min 3 secs
9 Michael Rogers (Aus) QST Quick Step-Innergetic at 1 min 4 secs
10 Erwin Thijs (Bel) MRB Mr Bookmaker-Sports Tech at 1 min 5 secs