Coolmore Stud has added the triple Group 1 winner Sea Siren (Fastnet Rock – Express A Smile, by Success Express) to its huge band of mares after completing a private sale to secure her from breeder and original owner Keith Biggs.

Sea Siren carried Biggs’s blue and pink colours to victory in the Group 1 BTC Cup and Doomben 10,000 last season before adding the Manikato Stakes crown to her top level victories earlier this term.

The four-year-old will have her final start for Biggs in the BTC Cup before she represents Coolmore in the Doomben 10,000 at her next outing in a fortnight. Her trainer John O’Shea said Sea Siren said the classy sprinter has progressed well towards her first winter campaign goal.

“She’s been working well and she’s been set for the Brisbane winter as opposed to having her ready early this preparation,” O’Shea said on his website.

“She worked well on Tuesday morning, she’s happy and healthy, there’s a bit of speed in the race on Saturday, and that will give us the opportunity to ride her where she’s comfortable.”

Sea Siren is a half-sister to three stakes winners, Group 2 performer Lady Dehere (Dehere – Express A Smile, by Success Express), WA-based sire Oratorio (Stravinsky – Express A Smile, by Success Express) and Discorsi (Galileo – Express A Smile, by Success Express).

The grand mare also hails from the same family as Group 1 winner Hold That Smile and Group 2 victor Carry A Smile (both Haulpak – Silver Smile, by Silver Knight).

Cambridge Stud champion Zabeel (Sir Tristram – Lady Giselle, by Nureyev) sired last year’s winner Zabeelionaire (Zabeel – Kisumu, by Carnegie) but the sire will go unrepresented in Saturday’s 2013 renewal of the South Australian Derby (2500m) at Morphettville.

Fastnet Rock (Danehill – Piccadilly Circus, by Royal Academy) colt Hvasstan (Fastnet Rock – Snow Hero, by True Hero) is the favourite for the $500,000 event ahead of the Listed Galilee Series Final (2500m) winner Shoreham (Reset – Teneales Pearl, by Redoute’s Choice).

Reset (Zabeel – Assertive Lass, by Zeditave) sired the 2009 South Australian Derby winner Rebel Raider (Reset – Picholine, by Dehere), one of two Group 1 winners produced by the Darley stallion.

Blue Gum Farm resident Elvstroem (Danehill – Circles Of Gold, by Marscay) has two chances to produce his maiden Group 1 winner with outsiders Gingerboy (Elvstroem – Tingirana, by Generous) and Gold Medals (Elvstroem – Lady Mulroy, by Encosta De Lago).

Below is the field for Saturday’s Group 1 South Australian Derby (2500m) at Morphettville.

Hvassatan (Fastnet Rock – Show Hero, by True Hero) showed he could be the horse to give champion Coolmore Stud sire Fastnet Rock (Danehill – Piccadilly Circus, by Royal Academy) his first Derby success with his win in Friday’s Group 2 Alister Clark Stakes (2040m) at Moonee Valley.

The Alister Clark Stakes provided the 2012 ATC Australian Derby winner Ethiopia (Helenus – Shona, by Spectrum). Hvasstan showed he was a chance of emulating the Pat Carey-trained galloper’s effort in 2013.

Hvasstan began moderately before surging home late to finish fourth in the Group 1 Australian Guineas (1600m) at his previous outing but a smarter start had him closer to the speed for jockey Craig Newitt.

A comfortable run left Hvasstan with plenty in hand rounding the bend before the $260,000 2011 Inglis Melbourne Premier Yearling Sale purchase outstayed Philippi (Host – Soorena, by Encosta De Lago) and Sheer Talent (Redoute’s Choice – St Katherine, by Barathea) to win by a length.

Trainer Peter Gelagotis was reluctant to declare the ATC Australian Derby was Hvasstan’s autumn goal but the Randwick event looks a logical assignment for the staying prospect, who ran fourth in the Victoria Derby in the spring.

“We’ll let the dust settle, we won’t get too excited, we’ll just bask in the ambience here tonight,” the Gelagotis said. “But my last venture up there wasn’t very pleasurable, so hopefully if we do go up there it’ll a bit nicer this time.”

Hvasstan, derived from the Old Norse meaning for Fastnet Rock, is the first and only stakes winner out of Snow Hero (True Hero – Samoan Moon, by Haulpak) but his sister Her Diamond Rock (Fastnet Rock – Show Hero, by True Hero) was also a city winner in Melbourne.

Fastnet Rock (Danehill – Piccadilly Circus, by Royal Academy)  gelding Super Cool (Fastnet Rock – Queen Mother, by Kingmambo) capped his three-year-old season with a win over the older horses in Saturday’s Group 1 Australian Cup (2000m) at Flemington.

Super Cool started the term with a win in a Seymour maiden but progressed to become a Group 2 winner in the Moonee Valley Vase (2040m) in the spring before finishing second to Fiveandahalfstar (Hotel Grand – Cryptic Miss, by Snippets) in the Group 1 Victoria Derby.

Super Cool beat Fiveandahalfstar to win the Group 2 Autumn Classic (1800m) at Caulfield before the pair fought out the final stages of the Australian Cup.

Fiveandahalfstar seemed to have his measure over the longer trip and that was in the spring but we’ll nominate him for everything in the spring and let him choose the path that we take him on,” Super Cool’s trainer Mark Kavanagh said.

“Each time we’ve put him out he’s got better and better and his two runs this time have been splendid but to get a three-year-old to win at weight-for-age against those guys is tough.”

“We’ve had a quiet year last year and we cleaned out a lot of horses that had be replaced and the young horses now are starting to fire up and we’re on our way to getting back.”

Kavanagh paid $150,000 for Super Cool at the 2011 Gold Coast Magic Millions Sale but the gelding has returned more than $1.2 million to his owners.

Victorian trainer Brent Stanley outlaid $100,000 to secure a half-brother to Super Cool by Stratum (Redoute’s Choice – Bourgeois, by Luskin Star) at last week’s Inglis Melbourne Premier Yearling Sale.

Super Cool (Fastnet Rock – Queen Mother, by Kingmambo) reversed the result of the 2012 Victoria Derby (2500m) with his with his emphatic win in Saturday’s Group 2 Autumn Classic (1800m) at Caulfield.

The Anthony Cummings-trained Fiveandahalfstar (Hotel Grand – Cryptic Miss, by Snippets) proved to be the superior stayer at Flemington last November but the gelding was no match for Super Cool’s turn of foot in the final 600 metres of the Autumn Classic.

Super Cool’s trainer Mark Kavanagh said the gelding was always going to be able to reel in Fiveandahalfstar even if the front-runner had things his way in the $220,000 race.

Kavanagh said he was currently working through a light four-start autumn with Super Cool before he aimed the dual Group 2 winner at the 2013 Cox Plate. The son of Fastnet Rock (Danehill – Piccadilly Circus, by Royal Academy) won the Group 2 Moonee Valley Vase (2040m) on Cox Plate day last year.

The Melbourne Cup-winning trainer said Super Cool could tackle the thin Melbourne weight-for-age ranks in the Group 1 Australian Cup (2000m).

“I wouldn’t rule anything out,” Kavanagh said. “The horse will tell us where we’re going. This preparation is only to set him up for the spring.

“He won’t be going interstate.”

Kavanagh paid $150,000 for Super Cool at the 2011 Gold Coast Magic Millions Yearling Sale. Super Cool hails from the same family as Grade 1 Breeders’ Cup Fillies & Mares Turf winner Soaring Softly (Kris S – Wings Of Grace, by Key To The Mint).

Fastnet Rock (Danehill – Piccadilly Circus, by Royal Academy) filly Casquets (Fastnet Rock – Suitely, by Woodman) made a late bid for a Group 1 Blue Diamond Stakes (1200m) start with her win in Saturday’s Listed Talindert Stakes (1100m) at Flemington.

Casquets did things wrong on the Flemington straight course but still had a  long head to spare over Annenberg (Artie Schiller – Annie’s Diamond, by Lacryma Cristi) at the finish.

Casquets was a $NZ570,000 buy at the 2012 NZB Premier Yearling Sale. Her trainer Mark Kavanagh said the youngster had the scope to back up in the Blue Diamond Stakes if she took no harm from her Flemington win.

“There’s a sense of timing with her right now so we’ll see how she does over the weekend and work out whether we send her to the paddock or whether we go forward,” Kavanagh said.

“There’s certainly improvement in her and if she can improve as much going into next week as she has from (last start) Moonee Valley to here she would certainly be a chance you’d think.”

“We left her pretty raw first up, we just let her naturally improve and that should bring her on so we’ll wait and see.”

Casquets became the 41st stakes winner for last season’s Australian Champion Sire. The filly is the fourth stakes winner bred on the Fastnet Rock / Woodman cross, including Group 2 Rothesay (Fastnet Rock – Schiaparelli, by Woodman) and Group 3 performer Stryker (Fastnet Rock – Laetitia, by Woodman). Both are in the early stages of their stud careers.