World No 1 Leona Maguire is on course for the ninth collegiate win of her career and her second this season after a second-round 66 gave her a two-stroke lead in the Tar Heel Invitational in North Carolina.

The Co Cavan star didn't drop a shot all day in her 26th sub-70 round for Duke, picking up birdies at the second, fourth and eighth to turn in 33 at the University of North Carolina's Finley Golf Course in Chapel Hill

She then birdied the 13th to take the outright lead, birdied the 16th and 17th to move to six-under for the day before topping off a superb day by rolling home a 20-foot par putt for a closing sand save.

The 22-year old leads by two strokes on nine-under-par from South Carolina's Ainhoa Olarra (67) and by three from Arkansas' Maria Fassi (65) and Virginia's Anna Redding (68).

Duke shot 17-under-par for the day — the second-lowest team total in school history — to lead the team standings by ten strokes from Alabama on 22-under par.

Virginia Elena Carta (68) is tied fifth, Jaravee Boonchant (68) tied 10th, Ana Belac (69) tied 21st and Miranda Wang (75) tied 40th.

Ruth's Chris Tar Heel Invitational, UNC Finley Golf Course (Par 72, 6379 Yards, Chapel Hill, NC)

Individual
1 Leona Maguire (Duke) 69 66 135
2 Ainhoa Olarra (South Carolina) 70 67 137
T3 Maria Fassi (Arkansas) 73 65 138
T3 Anna Redding (Virginia) 70 68 138
T5 Emilia Migliaccio (Wake Forest) 69 70 139
T5 Sarah Burnham (Michigan State) 69 70 139
T5 Jennifer Kupcho (Wake Forest) 66 73 139
T5 Molly Skapik (Louisville) 66 73 139
T5 Virginia Elena Carta (Duke) 71 68 139
T10 Kristen Gillman (Alabama) 71 69 140
T10 Ava Bergner (North Carolina) 70 70 140
T10 Lauren Stephenson (Alabama) 72 68 140
T10 Ashley Kim (Michigan) 74 66 140
T10 Jaravee Boonchant (Duke) 72 68 140

Team
1 Duke -22 283 271 554
2 Alabama -12 285 279 564
3 South Carolina -11 284 281 565
4 Arkansas -9 288 279 567.