Green’s Dictionary of Slang

up there Cazaly! excl.

[Australian rules football player Roy Cazaly (1893–1963), star of the South Melbourne team and noted for his leaps into the air for a ‘mark’]

(Aus.) a cry of encouragement.

[Aus]Sporting Globe (Melbourne) 26 July 4/4: [heading] ‘Up There, Cazaly!’ / Former Victorian Star Will Play With Tasmania.
[Aus]Baker Popular Dict. Aus. Sl. (2nd edn).
[Aus]J. Morrison Port of Call 245: ‘Give it to him, Jack!’ ‘Up there, Cazally!’ ‘Throw the silly bastards over the side!’ [AND].
[Aus] ‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xliii 11/2: up there cazaly: A cry of enthusiasm in Australian Rules.
[Aus]Bulletin (Sydney) 26 Feb. 11/1: While coolly robbing a jeweller’s or sticking up a bank, one or other of them is usually heard to utter some give-away locution like ‘Stone the crows’ or ‘Up there, Cazaly.’.
[Aus]G. Hutchinson Great Aus. Bk Football Stories 140: One of the greatest players Australian Rules has ever known, the lean and wiry Roy Cazaly, specialised in spectacular leaps enabling him to mark over taller opponents. Rover Skeeter Fleiter first yelled ‘Up there Cazaly’ in a 1921 game when spurring his teammate on during a tense battle for possession of the ball [AND].
[Aus]R. Beckett Dinkum Aussie Dict. 54: Up there, Cazaly: Triumphant term used by barrackers or supporters in the game of Australian Rules. Now more or less replaced by the boring phrase, ‘go for it.’.