Sunday will be more hectic than usual for five junior golfers in the fifth annual Asia Pacific Junior Cup. Kalena Preus, Seungjae Maeng, John Oda, Richard Hattori and Skye Inakoshi will play in the Junior-Am at Waikoloa Kings’ Course — after three days of team matches — then catch a flight home so they can tee off Monday morning for the John A. Burns Challenge Cup amateur team.

Then there is ‘Iolani senior Lorens Chan and David Ishii. The two-time state high school champion, who signed with UCLA, and the Hawaii Golf Hall of Famer are playing in the Fubon Senior Open in Taipei this weekend. Chan, whose grandparents live near the course, was given an exemption into the European Senior Tour event.

Ishii, Chan’s coach, has won the past two years in Taipei.

"It’s a little unusual because they will all be seniors," Ishii says. "I’m telling everyone he (Chan) just turned 50."

Their flight back to Hawaii is scheduled to arrive at 7:35 a.m. Monday. Both are planning to go straight to Mid-Pacific Country Club for the Burns Cup, where Chan will play for the amateurs and Ishii for the pros.

Chan requested the final match Monday morning. Golf begins at 7:16 a.m. both days.

"His partner will have to carry the match until he joins the team," said amateur coach Phil Anamizu. "Good thing he’s young, as is 75 percent of the amateur team. Maybe that is the reason we’re winning — no fear!"

Both the Asia Pacific and Burns Cups are similar to the Ryder Cup format. Asia Pacific brings together 16-golfer teams — 10 boys and six girls — from the Hawaii State Junior Golf Association and Japan High School Golf Association. The golfers earned their spots at designated events during the year. Japan has won three of the first four cups.

Golfers play Four-Ball matches starting at 9:30 a.m. today. Friday is a Foursome format, also beginning at 9:30 a.m. Singles matches start at 7 a.m. Saturday, with the awards ceremony expected around 2:30 p.m. The Junior-Am is Sunday morning. It benefits the HSJGA and Waikoloa Foundation.

The rest of the Hawaii players are Lisa Kang, state high school champion Eimi Koga, Ciera Min, Margaret Min, Zachary Braunthal, Alex Chiarella, Marissa Chow, Jonah Fonacier, Mariel Galdiano, Kenji Miyata and Pono Tokioka.

The 39th Burns Cup has 12-man teams that play two rounds Monday (Foursome and Four-Ball) and singles Tuesday. Those players also earned their spots over the course of the year.

Amateurs who play are eligible to compete in the Sony Open in Hawaii amateur qualifier, Dec. 12 at Waialae Country Club. The winner that day plays in January’s Sony. Chan played it as a high school freshman, after losing a playoff with Alex Ching the year before.

Pros dominated the Burns Cup early, winning 15 of the first 22 (the only tie came in 1983). Amateurs have won the past four — an unprecedented streak.

Matt Ma, Todd Rego, Isaac Jaffurs and Hall of Famer Brandan Kop, playing his 31st Burns Cup, are the only amateurs who are not juniors. The pro team also includes captain Ron Castillo Jr., Matt Pakkala, Kevin Shimomura, Kevin Carll and Larry Stubblefield, another senior Hall of Famer.

That should make Chan comfortable after three days at the Fubon Senior Open. The tournament started in 2003, with a $150,000 purse. Fubon Financial took over in 2008 and made a concerted effort to reach out to the younger generation with junior golf training camps and a touring golf program, and now Chan’s exemption.

The 17-year-old is a second-team Rolex Junior All-American. This year he finished second at the Junior PGA Championship and won State Stroke Play and Hickam Mamala Bay, along with his high school title.

"He hits it far," says Ishii, who has been working with Chan since his freshman year, "and he has an aggressive attitude with a good short game."

To mark Fubon’s 50th anniversary, it upgraded the tournament, making it a European Senior Tour event with a $400,000 purse. Chan and Ishii, the Japanese tour’s money leader in 1987, will take on 94 other golfers from 26 countries, including T.C. Chen, Masahiro Kuramoto and Sandy Lyle.

Last year, Ishii fired a final-round 67 to beat Taiwan’s Chung Chun-hsing on the final day. This will be his fifth start at Miramar Golf & Country Club in New Taipei City. He has never finished worse than second.

"The course feels like home," Ishii says. "Bermuda fairways and greens and it is windy."