After running fifth in the Herbert Power Stakes (2400m) at Flemington on October 10, Begg decided to give Zakouma a run over 1600m in the Crystal Mile (1600m) at Flemington two weeks later.
Begg admitted to waking up that night wondering if he had done the right thing running Zakouma, when last, beaten 8-½ lengths.
"I woke up in the middle of the night and thought where did I go wrong," Begg said.
"I was really pondering it and thinking how did I get it so wrong.
"Visually it looked awful because he was dropping out, but when you look at the sectional times, he ran his last 800 (metres) in 46-½ (seconds) and his last 600 was 34-½.
"His sectionals were quite good, but the race shape was pretty ordinary. It was stop, start, and he was too close and he won't go on the inside of horses as every time he's won, he's been down the middle of the track and Willie (Pike) knows that now.
"I went back over his last 10 starts and his times have been comparable all the way through and when I did that exercise, I was a lot more comfortable."