RHP Jake Arrieta ( 18 - 8 , 3.10 ERA during the regular season ) will start for the Cubs .
RHP 'll be opposed by Jake Arrieta Josh Tomlin ( 13 - 9 , 4.40 ERA during the regular season ) .
RHP Jake Arrieta ( 18 - 8 , 3.10 ERA during the regular season ) will start for the Cubs , and he 'll be opposed by RHP Josh Tomlin ( 13 - 9 , 4.40 ERA during the regular season ) .