David Johnson admits the unbeaten Swing Bowler faces by far the most difficult test of her career in Saturday's Betfair Hurdle at Newbury.
The outstandingly bred Galileo mare is close to the owner's heart as her dam is Lady Cricket, a top-class hurdler and chaser in his famous blue and green colours.
Now six and campaigned sparingly and cautiously by trainer David Pipe, Swing Bowler took novice events last season at Ludlow and Newton Abbot and only reappeared on New Year's Day at Musselburgh, winning a valuable handicap hurdle in impressive style.
Johnson said: "She has done nothing but surprise us, really, as she has never been exciting in her work at home. However, not many mares win five times from five races and her most recent run in Scotland was her best."
It will be like old times at the weekend, with Johnson's old ally Timmy Murphy sweating down for a light weight in a big handicap for the team.
"Timmy will ride her," the owner confirmed. "It's a huge step up in a race that would not look out of place at Cheltenham. I think she has it all to do, to be honest, but 10st 1lb is a nice weight and the ground should not be a concern."
Evan Williams has warned leading contender Court Minstrel is far from certain to take his chance.
The six-year-old ran out an impressive winner on his debut over obstacles at Cheltenham in October and emerged with huge credit when third behind top novice Dodging Bullets at the same track a month later, having suffered trouble in running.
He was slightly disappointing when only fourth in the Tolworth Hurdle at Sandown last time and having struggled to cope in the mud on that occasion, Williams insists his charge will only line up this weekend if conditions are right.
He said: "We are keeping an eye on it, but he definitely won't run if the ground is very soft. It will have to dry out considerably. He's in grand form at home and I would prefer to run him if I can because the prize-money is so good, but the one thing we learned at Sandown is that he can't handle very soft ground."
24 April 2015Dettori's a Jack of all trades
McManus at Sandown for McCoy finale
Hymn too good for Richards rivals
AP to keep champion's trophy
McCoy praise for Pipe
Apprentice masters Trial rivals
Custom is a Cut above
Wetherby goes Flat out
Divine Hymn in full cry for Dettori
Mutarakez lands Esher honours
Clouds chasing Gold glory
Nicholls seeking dream McCoy ending
AP preparing for final bow
Enright facing leg surgery
O'Meara mulling Force plans
Temple target for Pretend
Winning return for Walsh
Commemorative takes Trial test
Prince and Parrott bow out
Nicholls eyeing McCoy Celebration
Henderson on weather watch
Riches on Road to Punchestown
Apache on Punchestown trail
High hopes for Creek bow
Time called on Condon career
23 April 2015Arrow hits Beverley target
Cannock chasing Richards riches
Godolphin duo bow out
McCoy has Mole in Sandown camp
Eagle camp play waiting game
No catching Collaboration at Epsom
O'Neill door always open for McCoy
Weather worry for Wadham
Knott appeal dismissed
Millman on weather watch
Marlowe lands Epsom Derby Trial
Bolger sights set on Guineas
Hannon outlines Lockinge options
Hannon preparing Classic charge
22 April 2015Irish Guineas target for Baciata
Gleneagles leads Guineas contenders
Strong support for Commonwealth Cup
No decision on Geraghty return
McCoy set for Box Office farewell
Thrilling Friday card at Sandown
Guineas ruled out for Sympathy
Sherman set for Chrome reunion
Riches and Cossack in Gold equation
Recovering McNamara optimistic
Fly and Jezki set for World battle
Cooper braced for 'emotional' day
Sprinter set for Sandown
Celebration favoured for God's Own
Chiang camp target Middleton return
Dettori booked for Marlowe mount
Geraghty closing in on comeback
Hannon has Great expectations
Own poised to duck Sandown
21 April 2015Niven sweet on Cookie Ripon raid
Fly set to break new ground
Uranna sets sail for Punchestown
McCoy available for Gold runners
Toes points in right direction
Ascot not Newmarket for Ward pair
Maude hails departing McCoy
Options open for Gosden's Ball
Mr Mole lined up for AP race
Judge up for the Cup
Kurland heads direct to Ascot
Lieutenant in line for Punchestown