“Winners are grinners and losers can make other arrangement” is a popular sports saying in Australia. The saying sometimes begins “winners can laugh’ or “winners can smile,” and sometimes ends “losers can please themselves.”
 
“Winners are grinners; losers can please themselves” was credited to Australian horse trainer Vic Rail in 1988.
 
   
Google News Archive
3 October 1988, The Age (Melbourne, Australia), “The Rogue Show is back—proving a hard and fast rule” by Les Carlyon, pg. 5, col. 2:
Vic (Vic Rail, a trainer—ed.)came in on cue: “Winners are grinners; losers can please themselves.”
 
Google News Archive
13 February 1989, The Age (Melbourne, Australia), “Rogue keeps doing what he does best” by Les Carlyon, pg. 24, col. 8:
... when someone in the crowd yells: “Winners are grinners, Vic.” Rail flashes back, as though it had been rehearsed: “Yeah, and losers can please themselves.”
         
OCLC WorldCat record
Winners are grinners.
Author: Meredith Costain; Paul Collins; Jir̆í Tibor Novák; Marianne De Pierres; Justin D’Ath; All authors
Publisher: South Melbourne : Pearson Education, 2000.
Series: Spinouts bronze. 
Edition/Format: Book : Fiction : Primary school : English
 
Tripod
Round 5 Post Match Interviews - Wests Tigers V Melbourne Storm
Tigers new halfback Ben Black reinforces the old saying “winners are grinners and losers can please themselves.” 
Page last updated 21 March 2001
 
Google Books
Winners Are Grinners:
The Complete Guide to Winning Competitions in Australia
Mach N. Dinh-Vu
Pen and Brush Publishers, 2003
   
Tim Blair
There is a saying in football: “winners are grinners (and the losers can make their own arrangements)”.
(...)
Like I say, “winners are grinners”.
Posted by: Allan at June 1, 2004 at 06:14 PM
   
BBC Sport
Last Updated: Saturday, 8 January, 2005, 17:39 GMT
City were ‘sloppy’, admits Keegan
Kevin Keegan praised Oldham after they stunned Manchester City in the FA Cup - but he felt his side contributed to their downfall at Boundary Park.
(...)
“We had enough chances but I’ve said before that with the Cup the winners can laugh and the losers make their own arrangements.
 
Google Books
The North of England Home Service
By Gordon Burn
London: Faber and Faber Ltd.
2010
Pg. ?:
It was spelled out on a plaque which hung over his head: “WINNERS WIN. LOSERS MAKE THEIR OWN ARRANGEMENTS.”
 
Twitter
Peter Spida Everitt
‏@SpidaEveritt  
A great coach once said to me “winners are grinners and losers can go f$@k themselves, So after the GF Morningside is grinning and as for me
2:26 AM - 19 Sep 10
 
Google Books
The Power Within:
How to Create a High Performance Mind
By John Newcombe and Michael Duff
Sydney, Australia: Momentum
2012
Pg. ?:
An old mentor of mine, Archie Punch, used to tell me: ‘Winners are grinners, and losers can please themselves what they do because nobody really cares.’
 
Twitter
Nigel Craig‏
@CraigNigel  
I’m reminded of that old football adage “the winners have a good time, the losers can make their own arrangements” #awinsawin
7:19 AM - 8 Jan 12