Washington Nationals first baseman Adam LaRoche is not in Saturday's lineup against the host Cincinnati Reds because of back stiffness, according to CSNWashington.com.
LaRoche aggravated his back during Friday night's 15-0 loss to the Reds. LaRoche may sit out Sunday as well. Chad Tracy is starting in LaRoche's place.
LaRoche, 33, batted .271 with 33 home runs and 100 RBI last year. He just started a two-year, $24 million contract with a mutual option for 2015.