He’s been the ‘other’ amateur from Perth at this week’s Australian Open and forever playing second fiddle to his superstar sister Minjee, but Min Woo Lee cares little for sibling rivalry as he contends with the big stars at the Australian Open.

The 18-year-old arrived at Royal Sydney with less fanfare than fellow Western Australian Curtis Luck, but his round of five-under-par 67 on Friday propelled the 18-year-old into the top 10 at Royal Sydney.

Lee – who this year became the first Australian male to win the US Junior Amateur title – believes he’s already done enough to emerge from the shadow of older sister Minjee, a three-time LPGA Tour winner by the age of 20.

He doesn’t care about comparisons as he looks to make his own name.

“She’s my sister. I’ve got to care for her. She’s got to care for me,” said Lee.

“It’s not like I get pissed off or anything. It’s good to see her playing well and it’s good to see myself playing well.”

Lee tees off at 11.56am with Venezuelan US PGA Tour star Jhonattan Vegas