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

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.

Professional jealousy.

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.