Round 20 Preview — 2026 NRL SeasonNRL Analytics

Dolphins v Cowboys

Four of the last five and a 57% Suncorp record say Dolphins — but the 0-66 hangover and the worst Consistency Index in the NRL say tread carefully. Lean tip: Dolphins by 6.

SavvyPlays · 15 July 2026 · Suncorp Stadium, Brisbane · Sunday 19 July · 4:05PM AEST

A week is a long time in rugby league. Seven days ago the Dolphins were 66-0 losers against the Sharks — a result that crashed their Consistency Index to 0.457, the worst in the competition. Now they host a Queensland derby against a Cowboys side they have beaten four times in the last five meetings, including 40-14 in Townsville just six weeks ago.

The structural signals still favour the home side: a 57% win rate at Suncorp Stadium, three straight wins in the fixture, and a +10.2 model margin. But a side that just conceded 66 with Isaiya Katoa still weeks away earns no benefit of the doubt, and the CI/DS ledger actually tips 1.4 to the visitors. Lean tip: Dolphins by 6.

SavvyPlays Tip — Lean

01Dolphins by 6

The case for the Dolphins is history and home ground: four wins in the last five against the Cowboys with three straight, a 57% record at Suncorp, and a model margin of +10.2. When these sides met in Round 14 the Dolphins won by 26 in Townsville.

The case for caution is everything about last week. A 66-0 loss is not just a bad night — it dropped the Dolphins' Consistency Index to 0.457, the lowest in the NRL, and the CI/DS ledger leans 1.4 to the Cowboys. With Katoa still out and Bradley Schneider (+0.6) steering, the floor is low. History and Suncorp should hold, but at reduced confidence. Lean tip: Dolphins by 6.

+10.2

Predict Margin

4-1

H2H (Last 5)

57%

Suncorp Win Rate

0.457 (worst)

Dolphins CI

Cowboys +1.4

CI/DS Edge

0-66

Last Start

Venue & Head-to-Head

02Venue & Head-to-Head

The Dolphins have owned this derby: 40-14 in Townsville in Round 14 this season, 43-24 and a 58-4 annihilation in 2025, and 28-26 in 2024 — four wins in five, three straight. The Cowboys' one win in the sample was a 43-18 statement at Suncorp in Round 1, 2024.

Suncorp runs at 57% for the Dolphins. Combined with the head-to-head streak, the setting favours the home side — the question is purely which Dolphins outfit turns up seven days after conceding 66.

Year	Round	Match	Score	Winner
2026	R14	Cowboys v Dolphins	14-40	Dolphins
2025	R20	Dolphins v Cowboys	43-24	Dolphins
2025	R15	Cowboys v Dolphins	4-58	Dolphins
2024	R9	Cowboys v Dolphins	26-28	Dolphins
2024	R1	Dolphins v Cowboys	18-43	Cowboys

Named Squads

03Dolphins — Squad avg ±/G: +3.8

#	Player	Position	GP	±/G
1	Hamiso Tabuai-Fidow	Fullback	12	+6.4
2	Jamayne Isaako	Wing	17	+3.8
3	Jack Bostock	Centre	7	+20.3
4	Herbie Farnworth	Centre	16	+3.5
5	Selwyn Cobbo	Wing	12	+5.4
6	Kodi Nikorima	Five-Eighth	13	+1.4
7	Bradley Schneider	Halfback	12	+0.6
8	Thomas Flegler	Prop	12	-4.0
9	Jeremy Marshall-King	Hooker	9	+9.4
10	Francis Molo	Prop	13	-5.2
11	Connelly Lemuelu	Second Row	17	+3.4
12	Kulikefu Finefeuiaki	Second Row	16	+1.9
13	Morgan Knowles	Lock	16	+2.7
14	Kurt Donoghoe	Interchange	10	+3.1
15	Max Plath	Interchange	12	+7.1
16	Tom Gilbert	Interchange	16	+1.3
17	Felise Kaufusi	Interchange	15	+1.1

Out: Isaiya Katoa still sidelined (expected back within three weeks). Bradley Schneider (+0.6) continues at halfback.

Named Squads

04Cowboys — Squad avg ±/G: -9.4

#	Player	Position	GP	±/G
1	Scott Drinkwater	Fullback	1	-12.0
2	Braidon Burns	Wing	12	-1.2
3	Zac Laybutt	Centre	12	-2.5
4	Tom Chester	Centre	1	-12.0
5	Murray Taulagi	Wing	1	-8.0
6	Jaxon Purdue	Five-Eighth	1	-12.0
7	Jake Clifford	Halfback	1	-12.0
8	Griffin Neame	Prop	1	-4.0
9	Reed Mahoney	Hooker	1	-12.0
10	Jason Taumalolo	Prop	1	-8.0
11	Heilum Luki	Second Row	1	-12.0
12	Jeremiah Nanai	Second Row	1	-14.0
13	Reuben Cotter	Lock	1	-12.0
14	Soni Luke	Interchange	1	+0.0
15	Kai O'Donnell	Interchange	5	+0.4
16	Matthew Lodge	Interchange	1	-12.0
17	Coen Hess	Interchange	1	+4.0

Out: No key outs named. Most Cowboys starters carry only one game of ±/G data — treat the squad numbers as a small, unreliable sample.

Match Analysis

05Key Matchups & Narratives

The Dolphins' strike is real when it functions: Jack Bostock (+20.3 in seven games) is among the form wingers in the competition, Jeremy Marshall-King (+9.4) drives the middle service, and Hamiso Tabuai-Fidow (+6.4) remains the x-factor. The spine is the soft spot — Schneider (+0.6) and Kodi Nikorima (+1.4) are steady rather than commanding, and Katoa's absence caps the ceiling.

The Cowboys' numbers need an asterisk: most of their named starters carry a single game of ±/G data, so the sheet reads worse — and noisier — than the side that has gone 10-7. Tom Dearden's name in the reserves is the listing to watch through the week.

Both teams sit at 10-7, level on the ladder and playing for the same finals real estate. Derby stakes plus a wounded favourite is the classic volatility cocktail — which is precisely what the Dolphins' 0.457 Consistency Index is measuring.

Volatility Warning

The Dolphins' Consistency Index of 0.457 is the worst in the NRL — their outputs swing further game-to-game than any other side's. They are capable of the 40-14 they posted on the Cowboys in Round 14 and of last week's 0-66. Treat any single-game read on this team with caution.

Prediction

06Prediction Breakdown

The model margin is +10.2, and the head-to-head (4-1 with three straight) and Suncorp record (57%) support the home side. The 0-66 hangover, the worst Consistency Index in the competition and a CI/DS ledger leaning 1.4 to the visitors pull the confidence down to a Lean. Dolphins by 6.

10-7

Dolphins Record

10-7

Cowboys Record