The Los Angeles Dodgers' division lead is dwindling and manager Don Mattingly suddenly faces another concern for the stretch run.Los Angeles Dodgers left fielder Scott Van Slyke makes a diving catch on a pop fly from San Francisco Giants' Angel Pagan during the third inning of a baseball game Friday, Sept. 12, 2014, in San Francisco.San Francisco Giants' Angel Pagan, right, steals second base as Los Angeles Dodgers second baseman Justin Turner drops the throw from the plate during the second inning of a baseball game Friday, Sept. 12, 2014, in San Francisco.Los Angeles Dodgers' Adrian Gonzalez reacts after striking out during the fifth inning of a baseball game against the San Francisco Giants on Friday, Sept. 12, 2014, in San Francisco.Los Angeles Dodgers starting pitcher Hyun-Jin Ryu throws to the San Francisco Giants during the first inning of a baseball game Friday, Sept. 12, 2014, in San Francisco.