Australians Anthony Brown and Michael Wright along with Taiwanese veteran Tsai Chi-huang took the joint first-round lead in testing conditions at the one-million-dollar (808,400 euros) Indonesia Open.

They fired five-under-par 67s at the Damai Indah Golf club in Jakarta in humid and windy weather to lead by a stroke from Australian Anthony Summers and Taiwan's Hsieh Tung-shu in the fifth event of this season on OneAsia.

"It was very tough out there as it was windy, very humid and the fairways are narrow," said the 27-year-old Brown.

"It's good to get a good first round in here as I started the year quite well but over the past few months I just have not been scoring well."

The more experienced Wright, aged 36, played in the group behind Brown in the morning and made an impressive eight birdies.

"We started early today so I thought we would have a chance to get the best conditions, but it was hard going," said Wright.

"I had a real up and down round but thankfully my putter saved me," added Wright, who has enjoyed a good season on OneAsia finishing joint 11th in the GS Caltex Maekyung Open and equal 14th in the SK Telecom Open.

Tsai was once a familiar name on leaderboards in the region and is best known for winning the three biggest tournaments in Taiwan.

He won the Taiwan PGA Championship in 1998, the Taiwan Open in 1999 and the Mercuries Masters in 2003.

"It is nice to be playing well in such a big event. It has been a long time. I didn't make many mistakes but it took a lot of concentration," said Tsai.

The 42-year-old lost his form and confidence after his big wins and spent time teaching golf on a driving range in Shanghai, before two memorable back-to-back comeback wins on the China Tour in 2008.

Pre-tournament favourite Liang Wenchong from China carded a 70, former champion Thaworn Wiratchant of Thailand and Mardan Mamat from Singapore came in with 71, while Japanese star Shingo Katayama finished the day even.

Indonesian fans had much to cheer about with Jamal Ondo and Ayadi Hermawan carding 70s to reflect the growing strength of golf in their country.