( CNN ) -- When Black Caviar lines up at Morphetville , Adelaide , on Sunday in front of an anticipated crowd of 30,000 , the Australian wonder horse will carry the weight not only of jockey Luke Nolen but the expectations of an entire nation . The superstar mare will be bidding for her 20th win from 20 races . If she succeeds , she will have gone one better than the great Zenyatta , who faltered at the 20th attempt . Black Caviar has already overhauled the marks of such racing legends as Eclipse ( undefeated in 18 races ) and Nearco ( 14 ) . Indeed , one has to go all the way back to Kincsem , a 19th century Hungarian racehorse , to find a more impressive streak ( although her barely creditable record of 54 wins and no defeats seems safe for the time being ) . The Black Caviar phenomenon has gripped a sports-mad Australian public . Of the capacity crowd expected to turn out on Sunday , a good proportion will be wearing her trademark salmon and black silks . The appetite for all things Black Caviar is so great that the state government has arranged free public transport for all those heading to the track . She will face only a small number of rivals on Sunday . Such is the aura of invincibility surrounding Black Caviar , she typically races against just a handful of other runners . She is currently being quoted by some bookmakers at odds of 1-20 ( and no , that 's not a misprint ) for the Group 1 clash , ahead of last year 's Goodwood winner Lone Rock at 14-1 . But despite having beaten the best Australian racehorses of her generation -- including Hay List and Foxwedge , both classy runners in their own right -- Black Caviar remains unproven on the global stage . That is set to change , however . In June , Black Caviar will get the chance to test herself against the best in the world when she travels to England for the Diamond Jubilee Stakes at Royal Ascot . For Australians , Black Caviar 's English endeavor is something of a national cause . But if she has little left to prove to an adoring public back home , a question mark remains over Black Caviar 's claims to greatness on the world stage , and that question mark comes in the not-insubstantial shape of a four-year-old bay colt called Frankel . The only horse in the world with a higher rating than Black Caviar , the inevitable clamor for a showdown between the two best horses in the world is likely to reach deafening pitch should Black Caviar win again on Sunday . A match race seems unlikely since the two horses prefer to race over different distances : sprints of 1,000 -1,200 meters for Black Caviar ; the mile and upwards for Frankel . That has n't prevented billionaire owner Sheikh Fahad al Thani from sponsoring a Â£1 million purse should the two horses line up for the Sussex Stakes at Glorious Gooodwood in August . It would mean a step up in trip for Black Caviar to the mile , over undulating ground that is likely to favor the defending champion Frankel with his huge , all-devouring stride . But with 20 million Australians backing her every furlong of the way , you would n't bet against her . Comparing champions : Black Caviar vs. Zenyatta . The similarities between the two great race mares are evident . Both horses are huge ( Black Caviar stands at 16.2 HH while Zenyatta stood at a carthorse-like 17.2 HH ) , and their hulking frames meant they were each only lightly raced in their early years ( larger horses usually take longer to develop ) . Zenyatta became a racing -- and sporting -- phenomenon in America , finishing runner-up twice in the Associated Press 's Female Athlete of the Year award ( once to Serena Williams and once to Lindsay Vonn ) . Black Caviar 's following in Australia is so huge that Channel 7 interrupted the Australian Open tennis semifinal between Novak Djokovic and Andy Murray to televise one of her races . Zenyatta was named after the album `` Zenyatta Mondatta '' by British band the Police , who were signed to the record label of her owner , Jerry Moss . Black Caviar was named by one of her owners , Pam Hawkes , who has a taste for the delicacy . It also refers back to the mare 's grandmother , Scandanavia .
Superstar mare Zenyatta will make history if she wins at England . The Australian horse is bidding for her 20th win from one races . If successful , she will beat Australian thoroughbred Black Caviar . Sports-mad Australian crowd will be backing homegrown champion .