Royal Portrush's Peter Kerr birdied two of his last three holes for fabulous four under par 69 and a two-shot win in the Ulster Boys Championship at Castlerock.

Two shots behind halfway leader Conor Purcell, who would finish five shots behind in fifth place. Kerr posted a three over 76 in the third round before producing the joint low round of the tournament and the only sub par score in the final round.

His bogey free 69 left him two shots clear of Kinsale's John Murphy, who led on one over par with a round to go thanks to a morning 71, but had to settle for the runner-up spot after a closing 75.

Kerry produced all the fireworks, picking up a shot on the par-five fifth before birdies at the 13th, 16th and 17th sent him clear of the rest.

He joins two-time winner Rory McIlroy on the list of champions in a prestigious championship, first won by the great Norman Drew in 1949. 

Bushfoot's Owen Crooks (75) shared third on five over with Tandragee's William Small while Cairndhu's Marc McKinstry finished eighth after a 73 that featured a hole-in-one at the 214-yard ninth.

Ulster Boys Championship, Castlerock (Par 73)

Detailed scores

293 Peter Kerr (Royal Portrush Golf Club) 78 70 76 69

295 John Murphy (Kinsale) 79 70 71 75

297 Owen Crooks (Bushfoot Golf Club) 79 72 71 75, William Small (Tandragee Golf Club) 77 71 74 75

298 Conor Purcell (Portmarnock) 75 71 79 73

300 Marc Boucher (Carton House Golf Club) 79 69 79 73

303 Bill Hannan (Carton House Golf Club) 79 81 70 73

304 Marc McKinstry (Cairndhu Golf Club) 77 78 76 73, Karl Eccles (Clandeboye) 79 75 73 77, David Brady (Co. Sligo Golf Club) 76 72 78 78

305 Cathal Butler (Kinsale) 83 71 76 75, Jamie Knipe (Royal Portrush Golf Club) 80 75 75 75

306 Reece Black (Hilton Templepatrick Golf Club) 79 77 76 74, Rory Williamson (Holywood Golf Club) 84 74 72 76

307 Gareth Hogan (Island) 75 80 77 75

309 Declan Kelly (Hermitage Golf Club) 82 77 73 77, Adam McCormick (Scrabo Golf Club) 79 77 75 78, Ryan Corry (Clandeboye) 76 74 78 81

310 Alan Fahy (Bray) 87 73 77 73, Hugh O'Hare (Fortwilliam Golf Club) 82 78 76 74, Devin Morley (Oughterard Golf Club) 84 72 79 75, Gavin Fitzmaurice (Balcarrick Golf Club) 81 73 80 76, Tommy Doran (Balbriggan Golf Club) 76 77 76 81

312 Jack Doherty (Carton House Golf Club) 79 79 79 75, Patrick Brennan (Belvoir Park Golf Club) 80 81 74 77, Ronan McCambridge (Cushendall Golf Club) 84 72 78 78

313 Henry Clark (Shandon Park Golf Club) 85 75 78 75, Jordan Logue (Hilton Templepatrick Golf Club) 83 78 77 75, James Cronin (Woodbrook Golf Club) 80 77 79 77, David McAleenon (Edenmore Golf Club) 82 78 76 77, Campbell Rodgers (Royal Portrush Golf Club) 82 78 76 77, Brian Jnr Fehily (Newlands) 79 81 74 79, Marc Norton (Belvoir Park Golf Club) 76 79 75 83, David Clince (Craddockstown Golf Club) 82 74 73 84

314 Connor Mulholland (Mount Juliet Golf Club) 82 77 79 76, Ross Mohan (Balcarrick Golf Club) 82 78 78 76, Luke Cummins (West Waterford Golf Club) 80 79 77 78, Shane McDermott (Co. Cavan Golf Club) 86 74 75 79, Michael McGurk (Warrenpoint Golf Club) 81 75 78 80

315 Ward Farrell (Dunmurry) 87 71 78 79

316 Michael Kennelly (Athenry Golf Club) 80 75 82 79

317 Andrew Mays (Portmarnock) 79 81 80 77, Tyrone Clarke (Royal Portrush Golf Club) 78 81 81 77, Fergus McCambridge (Cushendall Golf Club) 82 79 78 78, Marc McCormack (Ashbourne) 80 79 80 78, David Hill (Roscommon Golf Club) 81 77 77 82

318 Dean Cafferty (Carton House Golf Club) 80 79 82 77, Nathan McCann (Lurgan Golf Club) 81 77 82 78

320 Stewart McCaw (Royal Belfast Golf Club) 86 75 82 77

321 T J Ford (Co. Sligo Golf Club) 87 74 78 82

322 David Cunningham (Tandragee Golf Club) 87 74 81 80

323 Daniel Reilly (Galgorm Castle Golf Club) 80 81 81 81

327 Matthew Fitzsimons (Ardglass Golf Club) 84 76 89 78, Eamonn O’Driscoll (Killarney Golf Club) 82 78 86 81

Missed the cut

161 Louis O'Hara (Athenry Golf Club) 77 84 

162 Peter Cummins (Lurgan Golf Club) 85 77, Luke Donnelly (Kilkenny Golf Club) 85 77, William Eickholt (Portmarnock) 84 78, Odhran Mullan (Castlerock Golf Club) 83 79, Jack Brophy (The Royal Dublin) 83 79, Conor Smart (Belvoir Park Golf Club) 82 80 

163 Michael Young (FRANCE) 87 76, Sean Doyle (Athlone Golf Club) 84 79, Jake Vickers (Balbriggan Golf Club) 82 81, Gary Trotter (Aughnacloy) 81 82, Jake Rowe (Tandragee Golf Club) 81 82, Sean Kestell (Charlesland Golf Club) 79 84 

164 Dara Phelan (Faithlegg Golf Club) 87 77, Conor Byrne (Woodbrook Golf Club) 84 80, Ross Nelson (Belvoir Park Golf Club) 84 80, Anton Brennan (Athenry Golf Club) 83 81 

165 Mark Healy (Kinsale) 84 81, Jamie Tharma (Royal Belfast Golf Club) 83 82, Chris Black (Dunmurry) 81 84, Jack Patton (Letterkenny Golf Club) 81 84, Caolan Murphy (Greenore Golf Club) 80 85 , Gabriel Gribben (Fortwilliam Golf Club) 80 85,  

166 Gary Ward (Kinsale) 85 81, Anthony Mc Ateer (Warrenpoint Golf Club) 81 85 

167 Ben Graham (Scrabo Golf Club) 94 73, Conor McDonald (Lurgan Golf Club) 86 81, Peter Clark (Royal Portrush Golf Club) 85 82, Ben Surgeoner (Rathmore) 83 84 

168 Cian Hutchinson (Carton House Golf Club) 87 81, Keaton Morrison (Holywood Golf Club) 86 82, Rory Murphy (Dun Laoghaire Golf Club) 83 85 

169 Niall Doran (Mourne) 88 81, Sean Breheny (St. Anne's) 87 82, Oisin Devereux (Carton House Golf Club) 87 82, Jack Madden (Dungannon Golf Club) 86 83, Cathal Hastings (Castlebar Golf Club) 86 83, Enda Kennedy (Black Bush) 83 86, Adam Cromwell (Co. Armagh Golf Club) 82 87, Tom O'hara (Co. Sligo Golf Club) 80 89 

170 Jack Johnston (Clandeboye) 95 75, Conor Mckay (Roe Park Golf Club) 92 78, Ryan Thompson (Greenacres Golf Club) 87 83, Ross Moore (Royal Portrush Golf Club) 86 84, Christopher Duffy (Letterkenny Golf Club) 86 84, Conor Mooney (Black Bush) 85 85, Sean Murphy (Charlesland Golf Club) 83 87 

171 Adam Crum (Cairndhu Golf Club) 87 84, Peter Rolston (Shandon Park Golf Club) 87 84, Ryan Sheerin (Tullamore Golf Club) 85 86 

172 Harry Mcgeary (Dungannon Golf Club) 94 78, Timothy Howes (Mount Juliet Golf Club) 87 85, Darragh Burke (Tullamore Golf Club) 85 87 

173 Cian Feeney (Co. Sligo Golf Club) 93 80, Patrick Jordan (Silverwood Golf Club) 90 83, Ryan McNamara (Carrickfergus Golf Club) 90 83, Aaron O'donnell (Athenry Golf Club) 88 85, Brian Houston (Edenmore Golf Club) 88 85 

174 Jason Murphy (Warrenpoint Golf Club) 92 82, Jude Maskey (Fortwilliam Golf Club) 91 83, Nathan Kernaghan (Massereene Golf Club) 89 85, Daragh Coleman (Skerries Golf Club) 88 86 

175 Eanna Melville (Gort Golf Club) 94 81, David Burns (Cushendall Golf Club) 85 90 

176 Paul Kelly (Glasson Golf Club) 97 79, Jack Liston (Black Bush) 94 82, Darragh Smith (Castle) 94 82, Alex Murray (Island) 91 85, Andrew Glass (Castlerock Golf Club) 90 86 

177 Aaron Howard (Palmerstown Stud) 93 84, Jack Shellard (Lisburn Golf Club) 91 86, Glenn Fry (Carrickmines Golf Club) 90 87, Jordan McDonald (St. Anne's) 89 88 

178 Jack Montgomery (Fintona Golf Club) 94 84, Colm Beakey (Galway Bay Golf Club) 90 88 

179 James Bohan (Kinsale) 97 82 

181 Danny Mcgarvey (Cruit Island Golf Club) 94 87, Christopher Charlton (Dungannon Golf Club) 90 91 

187 Thomas Gracey (Dunmurry) 101 86, John Moore (Royal Portrush Golf Club) 89 98 

192 Seamus Og O'Neill (Co. Cavan Golf Club) 98 94 

198 Eoin Aherne (Mallow Golf Club) 103 95 

NR Daniel Devlin (Fota Island Golf Club) 98 NR, Liam Jennings (Balmoral Golf Club) 87 NR, Ciaran Smyth (Greenore Golf Club) 87 NR, Dale Baker (Downpatrick Golf Club) NR, David Knox (Foyle) NR, Danny Madden (Dungannon Golf Club) NR, Kevin Power (Kilkenny Golf Club) 85 DQ, Luke Flynn (Dun Laoghaire Golf Club) 84 DQ, Graham Curry (Faughan Valley Golf Club) 83 DQ 

92 Ciaran McCabe (Dungannon Golf Club) 92 

93 Conor Rice (Athlone Golf Club) 93 

94 Joseph Rafferty (Castle Hume Golf Club) 94 

96 Marco Deane (Malone) 96