FRANKFURT, Germany — Vitali Klitschko is leaving boxing to concentrate on politics and his role as an opposition leader in Ukraine.

Klitschko vacated his WBC world heavyweight title Monday and said he doesn't expect to fight again as he pursues a presidential bid in his home country, where citizens have been protesting for weeks in Kiev over President Viktor Yanukovych's decision to shun closer ties with the European Union and push his country toward Russia.

ASHBURN, Va. — Washington Redskins coach Mike Shanahan has no plans to resign.Shanahan said it's “accurate” to say that he doesn't plan to quit after what will be his third losing season in four years.Shanahan reiterated, however, that his fate won't be determined until he and owner Dan Snyder talk about the direction each wants the team to take.

Arizona remains the runaway No. 1 in The Associated Press' college basketball poll after winning a close game at Michigan on Saturday.The Wildcats (11-0), who won 72-70, received all but two of the first-place votes from the 65-member national media panel.Syracuse (10-0) got the other two No. 1 votes and remains second in a poll. Ohio State is third, followed by Wisconsin, Michigan State, Louisville and Oklahoma State.UConn remained a unanimous No. 1 at the top of the women's poll, with a showdown against second-ranked Duke looming Tuesday night.

PHOENIX — The Arizona Diamondbacks acquired closer Addison Reed from the Chicago White Sox in exchange for third base prospect Matt Davidson.Reed, who turns 25 later this month, ranked fifth in the American League and seventh overall in the majors with 40 saves last season.

ST. LOUIS — The St. Louis Cardinals signed free-agent second baseman Mark Ellis to a one-year, $5.25 million contract, giving them insurance for rookie Kolten Wong.