Sun-Times sports columnist Mariotti resigns

Longtime Chicago Sun-Times sports columnist Jay Mariotti has announced his resignation.

The Sun-Times said on its Web site late Tuesday that Mariotti left "to pursue other opportunities."

Mariotti told the Chicago Tribune he quit because he thinks the future of sports journalism is online.

Mariotti joined the Sun-Times in 1991 and has been a regular panelist on ESPN's "Around the Horn." He says he'll continue on television.

He made national headlines in 2006 when Chicago White Sox manager Ozzie Guillen went into a profanity-laced tirade against him before a game against St. Louis. Guillen later apologized.

Mariotti also got into a public spat this year with fellow Sun-Times staffers after writing a column that said he was Guillen's only critic in the Chicago media.