Phil Mickelson calls out fellow golfers for 'intentionally loose' ball marking

Mickelson made the claim after being asked his opinion on the four-shot penalty incurred by Lexi Thompson in last week's ANA Inspiration.

A number of players on the PGA Tour are "intentionally loose" in marking their ball, according to three-time Masters champion Phil Mickelson.

Mickelson made the claim during his pre-tournament press conference at Augusta National after being asked his opinion on the four-shot penalty incurred by Lexi Thompson in last week's ANA Inspiration.