The golfer who Rory McIlroy despises more than Patrick Reed.

Rory McIlroy openly discussed his feelings about fellow golfers Patrick Reed and Billy Horschel.

McIlroy and Reed have a history of public animosity.

Surprisingly, McIlroy admitted to disliking Horschel even more, particularly during the 2007 Walker Cup.

This revelation came during McIlroy's appearance on the "Subpar" podcast by GOLF.

McIlroy and Horschel have since become close friends despite their past rivalry.

The dislike for Horschel stemmed from his behavior towards the crowd during their matches.

McIlroy felt a strong connection to the crowd and was offended by Horschel's actions.

Horschel had a better record against McIlroy during the 2007 Walker Cup.

Despite their past animosity, it appears that their relationship has improved over time.

The revelation sheds light on the complex dynamics and emotions in professional golf.