First Semi Final - Saturday September 4, 1920 at Grong Grong
Marrar ............ 1.0 .. 2.2 .. 4.4 .. 5.4 (34)
Narandera ..... 1.0 .. 3.1 .. 5.2 .. 6.5  (41)
Umpire: F. C. Harrison, of Sydney League
Goals - Marar: Jim Beheny, J Blair, G Gregory, H Molloy
Narandera: J Sheehan 2, J Parr, B Confoy, G Hayes, W McClure
Marrar: Bill Scott (capt), Jack Blair, Harry M'Evey, Jim and Joe Breheny, George Castle, Pat Gaynor, G Gregory, A Blair, Roy Plummer, Bill McIntyre, Rueben Brown, Joe O'Keefe, Harry Molloy, Lou Fury, B and M Hall, E Brown. 
Narandera: Jim Grimmond (capt), Jack Sheehan, Jack Whitty, Tyson Moon, Ted Roach, Talbot Griggs, Ben Hawkshaw, Jack Parr, George Stewart, Alf Longmire, Bob Kersley, Dan Moon, Alf Hutchison, Bill McClure, B. Confoy, Jack Barclay, Gus Hayes
Match report: The meeting of Narandera and Marrar (last year's premiers) drew a vast crowd to the Grong Grong oval, the gate receipts amounting to £41/7/3. All arrangements were ably carried out by Messrs. W. Guest and W. Anderson, president and secretary respectively of the Association, and reflect much credit to the gentlemen concerned. Mr. F C. Harrison, who had controlled the recent Narandera-Coolamon match, was field umpire, whilst L. Harry and J. Hatton, also of Sydney, had charge of the goal flags.
The first half of the game produced a great effort, and it was fully expected during the interval even greater deeds would be witnessed in the remaining two sessions. But early in the third it was noticeable that the play was deteriorating, too many men allowed on the ball, and compared with the previous quarters was much below par. The fourth quarter was practically a repetition of the third. As it was drawing to a close one of the most degrading incidents in the history of the Association occurred, and it is sincerely to be hoped that such regrettable occurrence will never be witnessed again.
Within seven minutes of time a Narandera man and Gregory (Marrar) were in pursuit of the ball on the Western boundary, near the scoring board, when the former appeared to receive a bump. This he evidently resented, as he rushed in and struck Gregory.

A section of crowd rushed the ground, and a general mix-up looked imminent, but after a few minutes order was restored.
The play was resumed by the umpire awarding Narandera a free kick, but it had no sooner got going again before Joe Breheny was "floored" by a Narandera player. This caused another "brush" among the players, and the onlookers again rushed the ground a big "row" appeared certain. Fortunately, this was averted.
Whilst efforts were being made to clear the ground of spectators and get the play restarted, the ball was knocked out of the possession of the umpire, and when recovered again it was found to be punctured. A second ball was asked for, and a second-hand ball was procured, but Marrar would not consent to play with it. After a big delay, the umpire bounced the ball, and Narandera kicked a goal. They continued to play till their timekeeper rang the bell.

During the progress of the game the umpire penalised Marrar no less than 68 times, as against 28 frees by Narandera.

At times the umpire seemed to be over strict and right throughout the game appeared to pay marked attention to the red sashes. Narandera's only absentees from a full team were L. Clarkson, whilst Marrar were without three such good players as C. Molan, R. Cupples, and H. Ray, and it is needless to mention that they were all missed.  Narandera claimed the match, but Marrar protested the game being awarded to them. Source - Coolamon-Ganmain Farmers' Review / Fri Sep 10, 1920.

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Second Semi Final - Saturday, September 11, 1920 at Narandera Park
Coolamon ..... 2.2 .. 3.3 .. 5.5 .. 6.6 (42)   
Leeton ........... 2.1 .. 3.4 .. 4.8 .. 5.10 (40) 
Umpire: F. C. Harrison, of Sydney League
Goals - Coolamon: A Slade, R Armstrong, W Allen, L Stainsby, R Riseborough
Leeton: W Inman 2, G. Hollingsworth, J Schwab, R Elrington
Coolamon: Jack Leitch (capt), Alonza and Ernie Slade, Ollie and Ralph Armstrong, Harold Bean, N Bright, L Vesperman, Les Stainsby, J Dorman, Pat Billingham, Frank Rogerson, Joe Burley, Ray Riseborough, Roy Booth, T Crommelin, W Allen, George Blacklock.
Leeton: Guildford Webb (capt), Ted McClellan, Bill Inman, Dick Elrington, Francis and Len Polkinghorne, J. Whiteley, Wivell, F O'Keefe, G. Hollingsworth, Bill Taylor, J. Ash, Vic Alexander, "Snowy" Wallace, Charlie Grigg, Jack Schwab, D Foster, Ben Roberts

Match report: The weather on Saturday was wet and wintry. Rain fell at intervals during the morning and the journey to Narandera, while heavy rain had fallen during the previous days. Although the weather remained threatening throughout the match only a slight shower fell, while the heaviness of the ground seemed to exercise its regarding influence on both teams.

The game was slow up to half time, and after during the third quarter it was below the standard usually associated with the Association's semi-finals. In the middle of the fourth quarter few gave Coolamon a chance of winning. Throughout the season, however, with one exception, when a strenuous effort has been required, the green and whites have not been found wanting.

And so, on Saturday, for during the latter part of the final quarter they rallied wonderfully, while the character of the play was such that the previous shortcomings of both sides were forgotten.
Coolamon team had been strengthened by the return of Les Stainsby after his injury of several weeks previously, but although he did well under the circumstances he was not at his best. Ernie Slade also appeared, whilst it was noticeable that Riseborough struck his previous wonderful form. Although the weather prevented Alonza Slade from playing with customary ease and accuracy, some of his splendid marks and the almost uncanniness with which he so frequently appeared just where he wanted called forth generous comments of admiration. T. Crommelin at times was brilliant, and he effectively demonstrated that he was worthy of his place in the team long before that worthiness was recognised.

Although Coolamon's victory was well deserved, Leeton can consider themselves unlucky that they did not win.

The game was characterised throughout by the upmost friendliness, and although the umpire was strict and may have made one or two mistakes, he gave entire satisfaction to both sides. Source - Coolamon-Ganmain Farmers' Review / Fri Sep 17, 1920.   

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Premiership Final - Saturday, September 18, 1920 at Ganmain Recreation Ground
Coolamon ..... 3.6 .. 3.7 .. 5.9 .. 5.12 (42)
Narandera .... 0.2 .. 1.7 .. 2.10 .. 3.11 (29)
Umpire: Mr. Norden, of Melbourne League 
Coolamon: R Booth 2, T Crommelin, L Stainsby, A Slade, 
Narandera: J Sheehan 2, T Moon 
Coolamon: Jack Leitch (capt), Alonza and Ernie Slade, Les Stainsby, N Bright, Harold Bean, Ollie and Ralph Armstrong, T Crommelin, Roy Booth, L Vesperman, J Dorman, Pat Billingham, Frank Rogerson, George Blacklock, Joe Burley, Ray Riseborough, W Allen.
Narandera: Jim Grimmond (capt), Jack Sheehan (coach), Jack Whitty, Jack Barclay, Dan and Tyler Moon, Ted Roach, George Stewart, Bob Kersley, Alf Longmire, Ben Hawkshaw, Bill and A. McClure, Lionel Clarkson, Jack Parr, Talbot Griggs, B Confoy, Alf Hutchison. Match report: Coolamon put the seal on their fame as wet weather "artists" on Saturday last when they met and outplayed Narandera on the Ganmain Recreation ground. Saturday's contest drew the biggest crowd yet seen at a football match in these parts, the attendance being estimated at 3000. The afternoon was observed as a half-holiday in Coolamon, 549 persons, accompanied by the band, left here by special train, which was well crowded with Junee and Marrarites on arrival. The train from Yanco and Narandera end was also densely packed. Many also made the journey to the convincing ground by road. The gate receipts amounted to £78 odd.

The rain fell during the latter part of the week had made the playing ground in places very wet and greasy, especially near the boundary line. Whereas Narandera are considered a dry-weather team, Coolamon seem quite at home on a wet and heavy ground. And they lived full up to this tradition on Saturday, and soon after the game commenced established a substantial lead in points which gave them a mortgage on the prize.
Both teams received a flattering reception as they filed on to the field, Coolamon being led by little "Jimmy" Ibbott, as their mascot, dressed in the club's colors - green and white.  
Owing to Mr. Jack Elder being unable to make the trip at the last moment, the duties of field umpire was carried out by Mr. Norden, the noted Melbourne League man, and the manner in which he controlled the game left nothing further to be desired. Messrs. Harrod and Patterson (Sydney) were goal umpires, whilst Mr. H. C. Harrison, also of Sydney, was one of the boundary umpires. Messrs. W. Guest and W. Anderson were busy men seeing to all details and are deserving of a lot of praise.
Coolamon's effort in the opening team appeared to take the heart out of Narandera's supporters, and the enthusiasm usually found in such contests was in a marked degree absent. Nevertheless, the play was of sufficient merit to keep the vast assemblage interest throughout.  Except in the second quarter, Narandera looked like making a fight of it, Coolamon had all the best of the deal, and considering the state of the ground their high marking and kicking was remarkable. Narandera's efforts were mostly spasmodic, and undoubtedly the winners proved the much better combination.
When the final bell pealed forth proclaiming Coolamon winners by 13 points the joy of their big contingent of supporters knew no bounds. The players were cheered and cheered again and carried should high to the dressing room. Headed by the Coolamon Band, a procession was then formed and the heroes on the day again shouldered and carried to the Royal Hotel corner. 
With practically all the Coolamon players excelling themselves it is hard to discriminate, but we cannot refrain from mentioning the great game put up by Alonza "Poddy" Slade, who with his high marks and general play was always a highlight; Riseborough, whose marking and kicking was splendid, and Ernie Slade, in defence, also cannot be omitted.
Jack Sheehan was the pick of the Narandera eighteen, whilst Ben Hawkshaw and Alf Longmore also did yeomen service.

Source - Coolamon-Ganmain Farmers' Review / Fri Sep 17, 1920.