Shillelagh
Incredible 1600m form, and coming back to fillies/mares class, even though it is a Gp1.
Last start she was 4th in the Toorak, and ran each of her last 4 200m splits faster than Hartnell! The start before that, was 4th in the Epsom, and ran home the fastest 400m in the race. There is no doubt she can fly, when held up for one last run at them. Also, there are 3 big mile races in the Spring, the Epsom, the Toorak and the Kennedy. She has run the huge run in 2 of them this Spring, and has by-passed the Kennedy, to run against the mares. Just as a point, her last 4 x 200m splits in the Toorak were: 11.18, 11.49, 11.15, 11.62.
She doesn't run against mares too often, and somewhat surprisingly, her record isn't really any better against females, than it is against males! I'm also a bit worried that her records show a troubling trend. Career 28-7-3-1, her first 6 starts were 6-4-1-0, which means her starts after that are 22-3-2-1, which isn't quite stellar. She has done most of her racing in Open company, in Group race, and under the WFA scale carries 57kg here. At Gp3 or higher, she 19-2-2-1, and with 57kg or more, she is 10-1-2-0. none of those figures are inspiring, but those closing sectionals, particularly outstripping Hartnell 4 sectionals in a row, are amazing.
Amphitrite
She just keeps winning, and running times. It's hard to say a bad word against her! Remember how amazing Shillelagh last 4 splits were in the Toorak? Well, let's look at Amphitrite in the Thousand Guineas, over the same track, distance and day: 11.93, 11.85, 11.04, 11.63. They're pretty comparable, and in fact Amphitrite ran a quicker last 400m.
Shillelagh 800-400 22.67, 400-post 22.77
Amphitrite 800-400 23.78, 400-post 22.67
So, on face value, Shillelagh holds an advantage, BUT ........ Shillelagh goes up 3.5kg, and Amphitrite drops 5.5kg. That's a 9kg swing in Amphitrite's favour, coupled with Amphitrite is unbeaten at the track, and at the distance (2-2-0-0 at both), and looks like she will run a strong 2000m, while Shillelagh is 5-1-1-0 at 1600m (and has never raced over longer) and 3-1-1-0 at the track.
There is plenty of pace in this race, which is what both need. Both race like they will be suited if run on horses are winning (read post #192 about expected West/South West wind). It might come down to who gets the lucky break at the right time, but on the numbers, Amphitrite is looking the better of the 2 to, to me.