1930 WAFL season

• Claremont-Cottesloe played its first drawn match,^[10] and as of 2025 its only one with Perth.^{[note 2]}
• Subiaco's win over the 1929 runners-up is marred by the controversy of their playing WANFA team captain Snashall in their league team as well as their seconds (who played on the Saturday), which was deemed to be legal at the Tuesday secretaries meeting.^[11]

Two draws in successive rounds is a first in the WA(N)FL repeated only in 1960.^[15]

Subiaco's 15.22 (112) was a new record for highest losing score in WAFL history; the record stood only until the following round.^[29] Despite the weather being mainly fine,^[30] the match ended in semi-darkness.^{[note 3]}

West Perth's 17.12 (114) beat Subiaco's two-day-old record for highest losing score in WAFL history.^[34]

A wayward second quarter of 2.12 (24) with a strong wind by Perth leaves them insecure in second position, as Subiaco manage to hold them off and enter attack at the finish.

• East Fremantle kick 15.5 (95) to 1.7 (13) in a brilliant second half, which not only avenges their only defeat to this point but also drives Perth – second two rounds ago – out of the top four.
• West Perth moved into second spot, but it was the club's last win for the season. Frank Hopkins and George Moloney kicked six goals each.

• South Fremantle lose their place in the four after kicking what remains their lowest open-age score against Perth since 1918^[50] in extremely wet and muddy conditions.^[51]
• An inaccurate 2.8 (20) with a strong wind in the final quarter denies East Perth a fine win against the competition leaders, who win their eighth consecutive match to stand fourteen points clear on top.

George Moloney becomes the first Claremont player to kick ten goals in a match, as Perth lose their place in the four and Claremont stand half a game from advancing off bottom place. It was Claremont's first win at the W.A.C.A. and moved Moloney to the head of the goalkicking.^[58]

With interstate carnival players absent until the middle of August,^[62] rounds 16 and 17 were split over three weekends.

Subiaco toured the Eastern States during the interstate carnival,^[62] and East Fremantle lost a match to combined Goldfields eighteen by the score of 15.13 (103) to 16.15 (111) at Kalgoorlie in rainy weather.^[66]

Claremont-Cottesloe comeback produces third draw for season, an occurrence seen otherwise in the WA(N)FL only in 1937 and 1960.^[15]

• Claremont-Cottesloe, unbeaten since 28 June, have their finals hopes ended by a resurgent Maroon combination led by six goals from Leonard.
• East Fremantle, in their first competition match for a month, return to top form and leave East Perth's finals position in jeopardy with a crushing victory, despite the absence of key players Rowland and Pearce.

As a result of Subiaco's fighting win over an improved Cardinal outfit in wet conditions,^[76] the final round match will directly decide the fourth finals place should Perth defeat the Cardinals.

• After East Fremantle had established a winning advantage, a shootout in the last quarter saw Claremont kick 10.4 (64) (of which George Moloney kicked eight) and East Fremantle 11.5 (71). As of 2022, the aggregate score of 21.9 (135) remains the record for a quarter in elite Australian rules football.^[80]
• Frank Hopkins (West Perth) kicked twelve goals for the second half to finish with fourteen, the second-highest^{[note 4]} for a player on the losing side in elite Australian rules football.^[81]
• A record crowd^[77] (whose exact number was not quantified) sees Subiaco take the final place in the four with an impressive victory that leave critics seeing the Maroons as East Fremantle's most likely challenger.

Sol Lawn kicked eight goals as South recorded a surprise win over the in-form Maroons, whose rucks do not show their dominant recent form.^[83]

• Perth was playing in its first final since 1920.
• The Redlegs kicked seven of their ten goals in the second quarter to lead by four points at half time, but were outclassed afterwards.^[84]