Defending champion Matthew Giles is equal-second and Daniel Nisbet fifth after the opening round of the Callaway World Junion Championship at Torrey Pines, California. The 17-year old carded a two-under on the South Course to be just one stroke off leader Austin Cody alongside American Bodi Karsono and Frenchman Victor Dubuisson. Giles started his day with a bogey but managed to settle the nerves with three consecutive pars. The New South Welshman then posted back-to-back birdies on five and six before dropping a shot on eight and picking it up again the following hole. Two more birdies including a four on the par-five 18th saw the former champion in the clubhouse just one shot behind Cody of South Carolina. Notably, Giles managed to birdie each of the four par five holes on the highly-regarded South Course. Nisbet is also well in the hunt after posting a strong one-under. The Queenslander had five birdies bu two double bogeys proved costly, although the 16-year old is only two from the lead and one behind his countryman. Click here for a full leaderboard There is more good news for Australia in the girls division with West Australian Whitney Hillier posting a two-under to be equal-leader alongside seven other players. Hillier had an up-and down round that included six birdies and four bogeys on Torrey Pines&apos North Course on her way to a 72. Click here for a full leaderboard