The San Francisco Giants expect to add Michael Morse to the roster for the NL Championship Series, while the St. Louis Cardinals strengthened their bench by including catcher A.J. Pierzynski.A baseball rests in a puddle behind home plate in Busch Stadium, Friday, Oct. 10, 2014, in St. Louis. The St. Louis Cardinals and the San Francisco Giants are scheduled to start the NL Championship Series on Saturday in St. Louis.A tarp covers the infield in Busch Stadium, Friday, Oct. 10, 2014, in St. Louis. The St. Louis Cardinals and the San Francisco Giants are scheduled to start the NL Championship Series on Saturday in St. Louis.