The Holywood star was in contention on Sunday in Boston before a round of 69 left him on -2, four shots behind eventual winner Matthew Fitzpatrick.
McIlroy seems bullish about his chances heading into The Open Championship at St. Andrews with BoyleSports cutting his odds into 9/1 from 10/1, while Fitzpatrick has shortened into 20/1 from 33/1 after securing the first major win of his career.
McIlroy has also been clipped into 25/1 from 33/1 to be crowned RTÉ Sportsperson of the Year winner with his loyal followers backing him to land the accolade.
Sarah Kinsella, spokesperson for BoyleSports, said: “Rory McIlroy has been playing some great golf lately, so we are not surprised to see him backed as a popular favourite to win his fifth major next month at St Andrews. He is now 9/1 from 10/1 to win The Open, while US Open winner Matthew Fitzpatrick is 20/1 from 33/1 to land a quick-fire major double.”
Open Championship 2022 ~ Tournament Outright, (place terms: 1/5 the first 6)
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RTE Sports Personality of the Year 2022 ~ Outright Betting