Crossword clues for No. 1 5 letters:SCALESee 1-AcrossONTOP#1GRANDSee 1-DownOCHOALPGA #1 player LorenaUPSETLoss by #1, saySCALE1" = 100', e.g.EDGESBeats 1-0, sayCHINAIt celebrates National Day on October 1 (and it's where the answers to starred clues were invented)DUPES1- and 64-Across, and the first words of the four longest puzzle answersINTROTrack #1, maybeATNOS1 for H and 2 for He, e.g.URALS1,550-mile continental rangeRIGGSMid-'40s World No. 1 tennis pro BobbyTYSONAn upset of him was detailed in the ESPN "30 for 30" documentary "42 to 1"PHNOMWith 1-Down, Mekong River capitalARENAVenue for a major 1-DownGMAILOnline service since April 1, 2004OWETOHave a 1-Across withMOPEDChallenger to 1 DownGNOTE$1,000INSET1 Down closeupRINGO#1 tune of '64DIGIT6 or 1ACMES.1 spotsSHEBAKingdom in 1 KingsIDAHOAbout 1% of YellowstoneGORESFamily formerly at 1 Observatory CircleREESEWitherspoon with a 1 AcrossALBEEThree-Pulitzer playwright [#1 of 7]RADIOSee 1 AcrossARGONAbout 1% of the airNASALWith 1 Across, dosage delivery systemFOOTSU-turn #1, part 2METERDevice in 1 AcrossLAKESWater "related" to 1 AcrossEMILY#1 U.S. baby name that replaced Jessica in 1996COREDWith the 1 Across removedUPDOSSome 1 DownFRODO4'1" hero of fantasy fiction filmsANGIERolling Stones #1 hit of 1973BYTESThere are 1,048,576 in a megCRAFTWith 1 Across, her boat, perhapsREESEHis 1 was retired by the DodgersPROBEPioneer 1, for oneUTURNBoundless future ends with mid-Seventies reversal (1-4)PEACE1,050-mi. river in W. Canada.LITREMetric measure, approximately 1 quart.SKULLProp for "Hamlet," Act V, Scene 1.TERNE4 parts lead, 1 part tin.HENIEFirst female athlete to ever earn $1 million