CHARLOTTE, N.C. — Justin Thomas had a case of it early in his career.

Rory McIlroy and Jordan Spieth each had a case of it early this year.

Thomas was jealous of all the success his pal Spieth was having, winning eight tournaments in a span of three years, including five in 2014-15.

Justin Thomas had a case of it early in his career. Rory McIlroy and Jordan Spieth each had a case of it early this year. Professional jealousy.{ai:summary}<p>Justin Thomas experienced professional jealousy early in his career, particularly towards his friend Jordan Spieth, who achieved significant success by winning eight tournaments over three years. Rory McIlroy also faced similar feelings of jealousy earlier this year. </p><p>#sports</p>

PGA Tour stars open up on using professional jealousy as a source of motivation

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