Larry Collmus is calling his 15th straight Kentucky Derby. He’ll still get nervous.

LOUISVILLE,Ky.—BythetimethehorsesarriveatthestartinggateSaturdayforthe151stKentuckyDerby,NBCannouncerLarryCollmuswillhavealreadyquizzedhimselfatleast10timeseverydaythisweek,matchingthe20nameswiththejockeysilksthathe’llneedtoregurgitatewithouthesitationforanaudienceofmillions. He’llhavestudiedallthecontenders’previousracessothathecananticipatewho’sgoingtotheleadearlyandwho’slikelytoberunningfastattheend.He’llevenhaveafewphraseshandythatmightlendthemselvestoalittlepoetry,likein2015whenhehadthepresenceofmindtosay,“CaliforniaChromeshinesbrightintheKentuckyDerby!”justashehitthewire.  Still,evenasCollmuspreparestocallhis15thstraightDerbyonnationaltelevision—passingDaveJohnson’srecordof14consecutiveforABC—theanxietyhewillfeelinthosemomentsbeforethegateopensprobablywon’tbeawholelotdifferentthanhisfirstDerbycall.  “Thatpressurejustkindofshowsupeverytime,nomatterhowmanytimesyoudo