Trainer Darryl Thomas believes exciting youngster Whitfield could emulate the times of star kennelmate La Grand Quality after another commanding win.
Whitfield made it two victories from as many starts at Maitland on Monday night, jumping well from box seven and absorbing early pressure from Double 'Em Up before breaking clear to win by three lengths.
On a cool night in the final race on the program, Whitfield ran 25 seconds even for the 450 metres. He clocked 22.04 for 400m in a 8.5-length win on debut on March 19.
His 450m time was short of La Grand Quality's track record of 24.56 but his Sawyers Gully trainer said "he is capable of going close to the record given similar circumstances".
"It was a good run on that sort of track, a cold night and sticky track," Thomas said.
"He got pressured, which was a good thing to see him handle, and the eight gave him some. But he's a pretty handy dog."
Feature racing is on hold during the COVID-19 pandemic but Thomas believed Whitfield could one day compete at group level.
"The writing's on the wall, he's just got to keep mastering his craft," he said.
"He's got the ability, he's got the engine, he's just got to find all the tools and get it right on the day, and he's going to run some serious time.
"I think he's better on the two turns, but it's better to keep him on the big tracks and help him learn, and minimise injuries as much as possible while he's still young.
"He's only going to get better. That was his first go at the 450 and when he backs up, I think you'll find he'll go better again.
"At the same stage, he's probably as good [as La Grand Quality]. He's just a different style of dog. He's probably better suited to the two turns, where the other is suited to one."
Thomas said Whitfield's next run may be at Maitland on Monday.
At The Gardens on Tuesday night, Lil Bit Loopy and General George gave Greta trainer James Porter an early double.