Notable North American-Based Thoroughbreds

OASIS DREAM (GB) C 2000 by Green Desert------Sirepage: Nearco

Notable Offspring:

Midday 2009-Breeders' Cup Filly/Mare Turf winner

OBSERVATORY C 1997 by Distant View------Sirepage: Native Dancer

Notable Offspring:

Twice Over 2005-Money Winner

OCEAN SWELL (GB) C 1941 by Blue Peter (GB)------Sirepage: Phalaris

Notable Offspring:

St. Vincent 1955-Champion Turf Horse

OCTAGON C 1894 by Rayon d'Or------Sirepage: Touchstone

Notable Offspring:

Beldame 1901-Money Winner ,1956-Elected to Hall of Fame

OEDIPUS G 1946 by Blue Larkspur------Sirepage: Domino

58 14 12 9 $132,405

OFFICE QUEEN F 1967 by Fair Ruler------Sirepage: Nearco

39 16 6 8 $385,689

OFFLEE WILD C 2000 by Wild Again------Sirepage: Nearco

Notable Offspring:

Bayern 2011-Money Winner ,2014-Breeders' Cup Classic winner

She Be Wild 2009-Champion 2YO Filly ,2009-Breeders' Cup Juvenile Fillies winner

OGDEN (GB) C 1894 by Kilwarlin------Sirepage: Melbourne

28 15 8 1 $59,070

Notable Offspring:

Sir Martin 1906-Money Winner

The Finn 1915-Belmont Winner ,1923-Leading Sire

OIL CAPITOL C 1947 by Mahmoud------Sirepage: Swynford

80 19 10 9 $580,756

OLAMBALA C 1906 by Ornus------Sirepage: Bend Or

Notable Offspring:

Pillory 1922-Preakness Winner ,1922-Belmont Winner

OLD ENGLAND C 1899 by Goldfinch------Sirepage: Bend Or

OLD HAT F 1959 by Boston Doge------Sirepage: Teddy

80 35 18 9 $556,401

OLD ROSEBUD G 1911 by Uncle------Sirepage: Sir Hercules

80 40 13 8 $74,729

OLD TRIESTE C 1995 by A.P. Indy------Sirepage: Nearco

Notable Offspring:

Silver Train 2005-Breeders' Cup Sprint winner

OLDEN TIMES C 1958 by Relic------Sirepage: Man o' War

54 17 10 5 $603,875

Notable Offspring:

Roving Boy 1982-Champion 2YO Colt/Gelding

OLE BOB BOWERS C 1963 by Prince Blessed------Sirepage: Prince Rose

Notable Offspring:

John Henry 1975-Money Winner ,1980-Champion Turf Male ,1981-Horse of the Year ,1981-Champion Older Male ,1981-Champion Turf Male ,1983-Champion Turf Male ,1984-Horse of the Year ,1984-Champion Turf Male ,1990-Elected to Hall of Fame

OLHAVERRY C 1939 by Salerno------Sirepage: Bend Or

85 20 9 16 $273,412

OLYMPIA C 1946 by Heliopolis------Sirepage: Gainsborough

41 15 12 4 $365,632

Notable Offspring:

Decathlon 1956-Champion Sprinter ,1957-Champion Sprinter

Pucker Up 1957-Champion Handicap Filly/Mare ,1957-TRA Champion Handicap Mare

Top Bid 1970-Champion Steeplechase Horse ,1970-TRA Champion Steeplechase Horse

Other Sons With Notable Offspring:

OMAHA C 1932 by Gallant Fox------Sirepage: Teddy

22 9 7 2 $154,705

OMAR KHAYYAM (GB) C 1914 by Marco------Sirepage: Melbourne

32 13 6 5 $58,436

ON TRUST C 1944 by Alibhai------Sirepage: Gainsborough

88 23 19 13 $554,125

ON WATCH C 1917 by Colin------Sirepage: Domino

Notable Offspring:

War Plumage 1940-Champion Handicap Filly/Mare

ON-AND-ON C 1956 by Nasrullah------Sirepage: Nearco

Notable Offspring:

Forward Pass 1968-Kentucky Derby Winner ,1968-Preakness Winner

ONE COUNT C 1949 by Count Fleet------Sirepage: Sundridge

23 9 3 3 $245,625

Notable Offspring:

Airmans Guide 1961-Champion Handicap Filly/Mare ,1961-TRA Champion Handicap Mare

ONE DREAMER F 1988 by Relaunch------Sirepage: Man o' War

25 12 6 2 $1,266,067

ONE FOR ALL C 1966 by Northern Dancer------Sirepage: Nearco

Notable Offspring:

The Very One 1975-Money Winner

ONLY ONE C 1931 by Lucullite------Sirepage: Springfield

Notable Offspring:

Tea-Maker 1952-Champion Sprinter

OPEN FIRE F 1961 by Cochise------Sirepage: Dark Ronald

30 13 6 5 $227,329

OPEN MIND F 1986 by Deputy Minister------Sirepage: Nearco

19 12 2 2 $1,844,372

OPENING VERSE C 1986 by The Minstrel------Sirepage: Nearco

30 10 7 2 $1,669,357

ORB C 2010 by Malibu Moon------Sirepage: Nearco

ORB WELLS C 1901 by King Eric------Sirepage: King Tom

25 13 3 1 $75,450

ORDER (GB) C 1888 by Bend Or------Sirepage: Bend Or

Notable Offspring:

Ornament 1894-Money Winner

ORIENTATE C 1998 by Mt. Livermore------Sirepage: Nearco

19 10 3 0 $1,716,950

ORLANDO (GB) C 1841 by Touchstone------Sirepage: Touchstone

Other Sons With Notable Offspring:

ORLANDO BY ORME (GB) C 1899 by Orme------Sirepage: Bend Or

Notable Offspring:

Whimsical 1906-Preakness Winner

ORNAMENT C 1894 by Order------Sirepage: Bend Or

33 20 8 2 $86,977

ORNUS (GB) C 1891 by Bend Or------Sirepage: Bend Or

Notable Offspring:

Olambala 1916-Leading Juvenile Sire

OSMAND G 1924 by Sweeper------Sirepage: Waverley

37 23 4 4 $157,975

OUIJA BOARD (GB) F 2001 by Cape Cross------Sirepage: Nearco

22 10 3 5 $6,312,552

OUR BOOTS C 1938 by Bull Dog------Sirepage: Teddy

32 9 3 7 $126,152

OUR EMBLEM C 1991 by Mr. Prospector------Sirepage: Native Dancer

Notable Offspring:

War Emblem 2002-Champion 3YO Colt/Gelding ,2002-Kentucky Derby Winner ,2002-Preakness Winner

OUR JIMMY C 1974 by Tom Rolfe------Sirepage: Ribot

Notable Offspring:

Jimmy Lorenzo 1988-Champion Steeplechase Horse

OUR MIMS F 1974 by Herbager------Sirepage: Dark Ronald

18 6 6 1 $368,034

OUR NATIVE C 1970 by Exclusive Native------Sirepage: Native Dancer

Notable Offspring:

Rockhill Native 1979-Champion 2YO Colt/Gelding

OUT OF REACH (GB) C 1900 by Persimmon------Sirepage: Galopin

Notable Offspring:

George Smith 1913-Money Winner ,1916-Kentucky Derby Winner

OUTSTANDINGLY F 1982 by Exclusive Native------Sirepage: Native Dancer

28 10 4 3 $1,412,206

OUTSTRIP (GB) C 2011 by Exceed and Excel------Sirepage: Nearco

OXBOW C 2010 by Awesome Again------Sirepage: Nearco