Sioux The Boss Horse Form Profile

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Age: 3 years

Trainer: Mrs John Harrington

Owner: John G Hennessy & C Acheson & Mrs John Harrington

Next race

13 (13)

3rd August

17:20 Naas

J: Nathan Crosse

T: Mrs John Harrington

Form: —

OR: —

RPR: 31

TS: 7

W: 9st 3lb

Age: 3 yo filly

Well-held on debut at Down Royal 66 days ago; needs far more in cheekpieces

Place / No / Draw	Date / Going / Distance / Class	Time + Course Horse + Weight Jockey / Trainer	Verdict	Starting price
12th 12 (11)	29th May 2026 Good 0m 7f 0y	17:05 Down Royal Sioux The Boss 9st 3lb J: Nathan Crosse T: Mrs John Harrington	Sioux Nation filly; 70,000euros yearling; half-sister to four winners inc Measure Of Time (French 1m1f-1m6f inc 2yo/Listed; RPR 102); dam unraced sister to 1m2f/1m4f Listed Flat winner and smart jumper Stage Affair.	25/1

Place /
No / Draw

Date / Going /
Distance / Class

Time + Course Horse + Weight
Jockey / Trainer

Verdict

Starting price

12th

(11)

29th May 2026

Good

0m 7f 0y

17:05 Down Royal

Sioux The Boss

9st 3lb

J: Nathan Crosse

T: Mrs John Harrington

Sioux Nation filly; 70,000euros yearling; half-sister to four winners inc Measure Of Time (French 1m1f-1m6f inc 2yo/Listed; RPR 102); dam unraced sister to 1m2f/1m4f Listed Flat winner and smart jumper Stage Affair.

25/1