Craig Ross takes over as leading Scot at Royal 

Dublin, four behind leader Jack Hume

By the end of a chilling second day at the Irish Amateur Open
Championship, the leading group had been reduced from nine to one as  Jack Hume looked down on the rest of the field.

The Naas player, with rounds of 69 and 70 for five-uneer 139 has a two-stroke lead over Welshman Evan Griffin (69-72) with young Kevin LeBlanc (The Island) in third place with a pair of 71s for 142.

Kirkhill's Craig Ross, pictured, has taken over the mantle of leading Scot from Alexander Culverwell (Dunbar) who had been one of the nine co-leaders on 69 after Round 1
Ross shot a second-round 72 for one-under 143 and is sharing fourth place alongside Cormac Sharvin, the former Irish amateur champion and a Stirling University student.
Culverwell is tied 14th after a 76  for 145
He is one shot ahead of Ewen Ferguson (Bearsden) who made a six-stroke improvement with a 70 for 146 and a share of 20th place.
Jack McDonald (Kilmarnock Barassie) had a 75 for 147 and joint 29th place.
Greig Marchbank (Thornhill) slipped back with a 77 for joint 44th place on 149. 
The remaining Scots have to pull their socks up over the third round if they are to make the cut the the leading 50 and ties on Saturday evening. The projected cut mark is six over par.

Royal Aberdeen's Nick Macandrew is joint 55th on 151 (77-74) and Connor Syme (Drumoig) is T59 on 151 (71-81).
On nine-over 153 there are two Scots, Scott Gibson (73-80) and  Colin Baird (77-76) in joint 65th position.
Defending champion Jamie Savage had a nightmare second-round  
 
SECOND-ROUND SCOREBOARD
Par 144 (2x72) CSS 75 76
139 Jack Hume (Naas) 69 70
141 Evan Griffith (Wales) 69 72
142 Kevin LeBlanc (The Island) 71 71
143 Cormac Sharvin (Ardglass) 72 71, Jonathan Yates (Naas) 72 71, Craig Ross (Scotland) 71 72 , Tom Gandy (Isle of Man) 71 72 , Lukas Lipold (Austria) 70 73 , Richard James (Wales) 69 74
144 Marc Nolan (Delgany) 72 72 , Tomas Bessa (Portugal) 72 72 , Marco Penge (England) 71 73 , Thomas Mulligan (Co. Louth) 69 75
145 Rowan Lester (Hermitage) 72 73 , Tim Harry (Wales) 71 74 , Seamus Cullen (Slieve Russell) 71 74 , Gavin Moynihan (The Island) 69 76 , Alexander Culverwell (Scotland) 69 76 , Colin Fairweather (Knock) 69 76
146 Tiarnan McLarnon (Massereene) 78 68 , Sean Ryan (The Royal Dublin) 76 70 , Ewen Ferguson (Scotland) 76 70 , James Allan (England) 74 72 , Barry Anderson (Royal Dublin) 74 72 , Stuart Grehan (Tullamore) 72 74 , Dermot McElroy (Ballymena) 70 76 , Jeff Hopkins (Royal Dublin) 70 76 , Colm Campbell Jnr (Warrenpoint) 69 77
147 Axel Boasson (Iceland) 77 70 , Sean Flanagan (Co. Sligo) 76 71 , Damon Coulson (England) 75 72 , Aaron Grant (Dundalk) 75 72 , John Hickey (Cork) 72 75 , Christian Braeunig (Germany) 72 75 , Jack McDonald (Scotland) 72 75 , Gary Hurley (West Waterford) 71 76 , Gary Collins (Rosslare) 70 77
148 Jake Whelan (Newlands) 76 72 , Jack Pierse (Portmarnock) 74 74 , Stuart Bleakley (Shandon Park) 74 74 , Conor O'Rourke (Naas) 73 75 , Marco Iten (Switzerland) 72 76 , Luke Trocado (South Africa) 69 79
149 Nicholas Poppleton (England) 77 72 , Declan Loftus (Castlebar) 77 72 , Ben Best (Rathmore) 77 72 , Alex Gleeson (Castle) 76 73 , Matthew Jordan (England) 74 75 , Greig Marchbank (Scotland) 72 77
150 Kevin Reints (Netherlands) 74 76 , Caolan Rafferty (Dundalk) 74 76 , Marcel Zillekens (Germany) 74 76 , Richard Bridges (Stackstown) 73 77 , Shaun Carter (Royal Dublin) 73 77
151 Eugene Smith (Ardee) 77 74 , Mathias Eggenberger (Switzerland) 77 74 , Nick Macandrew (Scotland) 77 74 , Ollie Roberts (Hong Kong) 71 80
152 Seve Prins (Netherlands) 83 69 , Eoin Arthurs (Forrest Little.) 75 77 , Jarand Ekeland Arnoy (Norway) 75 77 , Ryan Symington (Lisburn) 74 78 , Connor Syme (Scotland) 71 81 , John Ross Galbraith (Whitehead) 70 82
153 Stephen Healy (Carton House) 77 76 , Colin Baird (Scotland) 77 76 , Michael Sinclair (Knock) 74 79 , Scott Gibson (Scotland) 73 80 , William Enefer (England) 70 83
154 Murray Naysmith (Scotland) 82 72 , James Fox (Portmarnock) 79 75 , Michele Cea (Italy) 78 76, Eanna Griffin (Waterford) 74 80 , Jack McDonnell (Forrest Little.) 73 81 , Markus Habeler (Austria) 72 82
155 Gordon Stevenson (Scotland) 78 77 , Michael Reid (Galgorm Castle) 78 77 , Andy Borg (Malta) 75 80 , Claudio Consul (Germany) 75 80 , Stephen Coulter (Warrenpoint) 75 80 , Anthony Blaney (Scotland) 75 80 , Jamie Savage (Scotland) 73 82 , Robin Dawson (Faithlegg) 70 85
156 Ashley Mason (England) 82 74 , Ronan Mullarney (Galway) 76 80 , Adam Wilson (Wales) 75 81 , Vitor Lopes (Portugal) 72 84 , Mark Morrissey (Mount Wolseley) 72 84
157 Cedomir Ilic (Serbia) 80 77 , Michael Hegemann (Germany) 78 79 , Declan O'Neill (Carton House) 77 80 , Robert Cannon (Balbriggan) 76 81 , Edward Richardson (England) 76 81
158 Paul Coughlan (Moate) 83 75 , Jack Bush (Wales) 79 79 , James Smedley (England) 78 80 , Richard Knightly (Royal Dublin) 78 80 , Eoin Leonard (Wentworth) 77 81 , Gary McDermott (Carton House) 76 82, Michael Ludwig (Austria) 74 84, Kyle McCarron (North West) 72 86
159 Sigot Lopez (Spain) 77 82 , Ian O'Rourke (Royal Dublin) 76 83 , Simon Bryan (Delgany) 75 84
160 John McGinn (Laytown and Bettystown) 82 78 , Petr Dedek (Czech Republic) 81 79 , Roy Connolly (Palmerstown Stud) 80 80 , Christopher MacLean (Scotland) 75 85 , Shaun O'Connor (Carton House) 75 85
161 Gavin Fitzmaurice (Balcarrick) 79 82 , Gianmaria Rean Trinchero (Italy) 77 84 , Michael Hirmer (Germany) 73 88
163 Shane McGlynn (Carton House) 81 82
165 Casper Simberg (Finland) 85 80
167 Jan Szmidt (Poland) 76 91
168 Johannes Lube (Germany) 79 89
171 Mel Loetscher (Switzerland) 81 90
174 Thomas Hackett (USA) 84 90
WD John Morris (Rosslare) 76 WD , Mark Shanahan (Castlemartyr) 79 WD