The 32-year-old is pushing towards throwing over 83m, which is the Athletics New Zealand 'A' standard that the national body deems necessary to compete for a top-16 placing at the world championships in August in Beijing.
He threw 82.75m at the Porritt Classic in Hamilton a month ago, which is a B mark, and also satisfies the IAAF qualification requirements.
After battling injuries last year, Farquhar suffered cramp in his calves today but still pushed through the windy conditions at Newtown Park.
"The body's good. It's finally working a lot better now and last year was quite a struggle to get things right so it's finally coming together nicely."
In today's other highlights, Angie Petty (nee Smit) saw off the challenge of Nikki Hamblin to defend her 800m crown in a time of 2m 3.90s. Hamblin finished in 2m 4.56s, while Katherine Marshall claimed third in 2m 6.18s.
"I didn't know what to expect with these conditions," Petty, who was thrilled with her win, said.
Long jump world record holder Mike Powell, 51, who was gunning to take the 50-54 year old masters record of 6.84m warmed up in the cool Wellington winds before his body didn't keep up with his mind.
The two-time world champion, who set the world record in 1991 with a leap of 8.95m, was left disappointed as he was unable to compete.
"In the warm-up I felt a little tightness but injuries are part of being an athlete and I was prepared to push through it," the American said.
"But as it started to get colder and more wet, my left leg started to lock up."
Powell has spent two weeks in New Zealand and will return to the US on Monday.
