Luke Donald, of England, walks to the driving range with his caddie John McLaren during a practice round for the Masters golf tournament Tuesday, April 9, 2013, in Augusta, Ga. (AP Photo/Matt Slocum)
Luke Donald, of England, walks to the driving range with his caddie John McLaren during a practice round for the Masters golf tournament Tuesday, April 9, 2013, in Augusta, Ga. (AP Photo/Matt Slocum)
China's manager John Mclaren, center, celebrates with his players Li Lei, left, and Okamura Shu after their 5-2 win over Brazil in their World Baseball Classic first round game in Fukuoka, Japan, Tuesday, March 5, 2013. (AP Photo/Koji Sasahara)
Washington Nationals interim manager John McLaren will leave the coaching staff following Sunday's game and be reassigned to a front-office position . (AP Photo/Nam Y. Huh)
Washington Nationals interim manager John McLaren, left, argues with first base umpire Mike Estabrook during the eighth inning of an interleague baseball game against the Chicago White Sox in Chicago, Friday, June 24, 2011. (AP Photo/Nam Y. Huh)
Washington Nationals interim manager John McLaren speaks during a news conference before an interleague baseball game between the Nationals and the Chicago White Sox, Friday, June 24, 2011, in Chicago. (AP Photo/Nam Y. Huh)
ASSOCIATED PRESS Jim Riggleman said the uncertainty over his contract situation undermined his authority as manager. John McLaren will take over on an interim basis.
