Massereene's Tiarnan McLarnon continued his fine form from the East of Ireland when he opened with a two-under 69 on the New Course to lead the Irish challenge in the St Andrews Links Trophy.
Tied third at Baltray, the 26-year old is just two strokes behind Frilford Heath's Olly Huggins, who shot a four-under 67 to lead by a shot from Matias Honkala (Finland), Jake Bolton (Ogbourne Downs), Luca Filippi (South Africa), Thomas Plumb (Yeovil) and Euan Walker (Kilmarnock, Barassie).
Kinsale's John Murphy, Naas' Jonathan Yates and Newlands' Jake Whelan are also well-placed after 70s with Tramore's Robin Dawson, the Flogas Irish Amateur Open champion, on level par after a 71
St Andrews Links Trophy
Round one (New Course, Par 71)
67 Olly Huggins (Frilford Heath)
68 Matias Honkala (Finland), Jake Bolton (Ogbourne Downs), Luca Filippi (RSA), Thomas Plumb (Yeovil), Euan Walker (Kilmarnock (Barassie))
69 Tiarnan McLarnon (Massereene), Nick Bachem (Germany), Andrew Wilson (Darlington), Tom Sloman (Taunton & Pickeridge), Rayhan Thomas (Ind), Jack Cope (The Players Club), Pierre Junior Verlaar (Ned), Gisli Sveinbergsson (Ice)
70 John Murphy (Kinsale), Lukas Michel (Aus), Christo Lamprecht (RSA), Jonathan Yates (Naas), Jake Hapgood (Southerndown), Nick Poppleton (Wath), Sandy Scott (Nairn), Rory Franssen (Inverness), Jake Whelan (Newlands), Laird Shepherd (Rye), Kieran Cantley (Liberton), David Hague (Malton & Norton)
71 Matthew Jordan (Royal Liverpool), Pierre Mazier (France), Michael Hirmer (Ger), Haydn Barron (Australia), Robin Williams (Peterborough Milton), Thomas Forster (Elton Furze), Jamie Stewart (Old Course Ranfurly Ltd), Jack Gaunt (Drayton Park), Hugo Bernard (Can), Robin Dawson (Tramore), Matias Lezcano (Arg), Jamie Li (Cumberwell Park), Ben Hutchinson (Howley Hall), Mitch Waite (Filton), Jake Burnage (Saunton), Jannik de Bruyn (Ger), Jediah Morgan (Aus), David Ravetto (France), Philip Bootsma (Netherlands), Taylor Carter (Hanover (Now Lords Golf & Country Club (Rayleigh)
72 Daniel Hillier (NZ), Lucas Becht (Belgium), Alex Gleeson (Castle), Matthew Lamb (Hexham), David Micheluzzi (Australia), John Pak (USA), Matt Saulez (RSA), Aron Juliusson (Ice), Jarle Volden (Nor), Kyle Michel (Aus), John Axelsen (Denmark), Jiri Zuska (Cze), Marc Hammer (Ger), Sam Locke (Stonehaven)
73 Caolan Rafferty (Dundalk),
74 Conor Purcell (Portmarnock), Rowan Lester (Hermitage), Ronan Mullarney (Galway),
75 Barry Anderson (Royal Dublin).