The Pittsburgh Steelers announced the disappointing news on Monday. . Steelers' coach Mike Tomlin said that Roethlisberger will undergo right elbow surgery this week. . Roethlisberger will be placed on injured reserve for the remainder of the season. . The Pittsburgh quarterback was injured during the second quarter . of Pittsburgh's 28-26 loss to the Seattle Seahawks on Sunday. . Roethlisberger grabbed his elbow after a pass attempt on the final drive of the first half. . Mason Rudolph replaced Roethlisberger for the entire second half. . Rudolph completed 12 of 19 pass attempts for 112 yards and two touchdowns.