Miles Johns vs. Jessie Rosas Prediction & Odds - Miles Johns 55¢

Live Markets

4 platforms

Moneyline

OutcomeConsensus

Best price

MJ

Miles JohnsARB

55%

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	54.0%	0¢	100¢	0¢	100¢
Polymarket US	59.0%	54¢	59¢	41¢	46¢
Polymarket	51.0%	50¢	51¢	49¢	50¢
ProphetX	55.0%	55¢	55¢	47¢	47¢

JR

Jessie RosasARB

46%

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	44.0%	0¢	100¢	0¢	100¢
Polymarket US	41.0%	41¢	46¢	54¢	59¢
Polymarket	49.0%	49¢	50¢	50¢	51¢
ProphetX	47.5%	47¢	47¢	55¢	55¢

Kalshi

Polymarket US

Polymarket

ProphetX

Best price among US-regulated venues.

Method of Victory

OutcomeConsensus

Kalshi

Polymarket

Best price

MJ

Miles Johns by Decision

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

JR

Jessie Rosas by Submission

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

JR

Jessie Rosas by KO/TKO/DQ

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

MJ

Miles Johns by KO/TKO/DQ

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

JR

Jessie Rosas by Decision

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

DC

Draw/No Contest

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

MJ

Miles Johns by Submission

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

FW

Fight won by submission: No

single venue51%

Platform	Implied %	Yes bid / ask		No bid / ask
Polymarket	51.0%	50¢	51¢	49¢	50¢

RT

Rosas to win by KO/TKO: No

single venue51%

Platform	Implied %	Yes bid / ask		No bid / ask
Polymarket	51.0%	50¢	51¢	49¢	50¢

FW

Fight won by KO/TKO: No

single venue51%

Platform	Implied %	Yes bid / ask		No bid / ask
Polymarket	51.0%	50¢	51¢	49¢	50¢

JT

Johns to win by KO/TKO: No

single venue51%

Platform	Implied %	Yes bid / ask		No bid / ask
Polymarket	51.0%	50¢	51¢	49¢	50¢

JT

Johns to win by KO/TKO: Yes

single venue50%

Platform	Implied %	Yes bid / ask		No bid / ask
Polymarket	50.0%	49¢	50¢	50¢	51¢

RT

Rosas to win by KO/TKO: Yes

single venue50%

Platform	Implied %	Yes bid / ask		No bid / ask
Polymarket	50.0%	49¢	50¢	50¢	51¢

FW

Fight won by KO/TKO: Yes

single venue50%

Platform	Implied %	Yes bid / ask		No bid / ask
Polymarket	50.0%	49¢	50¢	50¢	51¢

FW

Fight won by submission: Yes

single venue50%

Platform	Implied %	Yes bid / ask		No bid / ask
Polymarket	50.0%	49¢	50¢	50¢	51¢

Kalshi

Polymarket

Round of Victory

OutcomeConsensus

Kalshi

D/

Decision / Draw / No Contest

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

JR

Jessie Rosas to win in Round 3

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

MJ

Miles Johns to win in Round 3

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

JR

Jessie Rosas to win in Round 1

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

MJ

Miles Johns to win in Round 1

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

MJ

Miles Johns to win in Round 2

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

JR

Jessie Rosas to win in Round 2

single venue

Platform	Implied %	Yes bid / ask		No bid / ask
Kalshi	100.0%	0¢	100¢	0¢	100¢

Kalshi

Total Rounds

Best price

Over 0.5 Rounds

Under 0.5 Rounds

Goes the Distance

Fight to Go the Distance?

YES

NO

Market RulebooksOfficial settlement criteria and edge cases

Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket and Polymarket US and ProphetX.

Rules for Candidate:

Kalshi

Primary Rule

If Jessie Rosas wins the Johns vs Rosas professional MMA fight originally scheduled for Aug 8, 2026, then the market resolves to Yes.

Edge Cases

The following market refers to the Johns vs Rosas professional MMA fight originally scheduled for Aug 8, 2026. If this fight is postponed or delayed, the market will remain open and close after the rescheduled fight has finished (within two weeks). If the fight is declared a tie or no contest, the market will resolve to 50/50 for both fighters. If the fight is cancelled or rescheduled to over two weeks away, the market will resolve to a fair price in accordance with the rules. This market and these products have not been endorsed by Zuffa LLC, d/b/a Ultimate Fighting Championship, UFC. Any references to the “UFC,” or any other associated marks are descriptive only, and do not indicate an endorsement of this product or any affiliation between Zuffa and Kalshi.

Resolution Oracles

Polymarket

Primary Rule

Each market will resolve to "Over" if the fight between Miles Johns and Jessie Rosas at UFC Fight Night: Gamrot vs Salkilld, scheduled for August 8, 2026, lasts beyond the listed round threshold. Each market will resolve to "Under" if the fight does not last beyond the listed round threshold. For example: "Over 2.5 Rounds" will resolve "Yes" if the fight continues past the 2:30 mark of Round 3. "Under 2.5 Rounds" will resolve "Yes" if the fight ends before the 2:30 mark of Round 3. If the fight ends exactly at the threshold, it will resolve "50-50." If the bout is not scored, postponed beyond August 22, 2026, or canceled, all options will resolve "50-50." The resolution source for this market will be official information from the UFC.

Resolution Oracles

UMA Optimistic Oracle

Polymarket US

Primary Rule

This market will settle to the winner of the Miles Johns vs Jessie Rosas UFC fight scheduled for August 8 at 5:00PM ET. If the fight ends in a draw or is declared a no contest, the market will settle to $0.50. If the fight is cancelled before the opening bell, the market will settle to the last fair market price. If the fight is not held within two weeks of the originally scheduled date, the market will settle to the last fair market price. Outcome sourced from UFC.

ProphetX

Primary Rule

Sports moneyline - resolves based on official game outcome per ProphetX Prediction Rules

Resolution Oracles

Frequently Asked Questions

What does the Miles Johns vs. Jessie Rosas prediction market track?

The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket US, Polymarket, ProphetX in one place. Each price reflects the market’s implied probability, not a guaranteed result.

What are the latest Miles Johns vs. Jessie Rosas odds?

The latest available prices are Miles Johns: 54.0¢ on Kalshi, 51.0¢ on Polymarket, 55.0¢ on ProphetX, 59.0¢ on Polymarket US; Jessie Rosas: 44.0¢ on Kalshi, 49.0¢ on Polymarket, 47.5¢ on ProphetX, 41.0¢ on Polymarket US. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity.

Why do Miles Johns vs. Jessie Rosas odds vary across prediction markets?

The largest price difference shown across venues is 8.0 percentage points. Venues have different traders, liquidity and fees, so their prices can differ. A price gap alone does not establish an executable arbitrage opportunity; compare settlement rules and the actual buy and sell prices.

How do Miles Johns vs. Jessie Rosas prediction market payouts work?

For example, Miles Johns at 55.0¢ implies about a 55.0% chance. For a standard $1 contract, a share pays $1 if its outcome settles as correct and $0 if it settles as incorrect. A winning share bought at 40¢ earns 60¢ before fees. Check each venue’s settlement rules, fees and eligibility before trading.