Eric Hinske will be the position player taken off the roster, according to Hinske. Meanwhile, closer Troy Percival, who threw 35 pitches during a simulated outing at Thursday's workout, said he will not be on the roster.
Edwin Jackson now appears to be the pitcher who will be added to the roster, though he would not confirm that.
"The thing that's a concern is that you have that one bad game and you have to use people you don't want to use in that one bad game," Maddon said. "The days off help you, but if the bad game happens on the first day and then there's another game before a day off, that could still screw you up in regard to winning the next day. So I think it's important that you're covered, especially pitching-wise, in a seven-game series."
In Game 1, the Rays will start James Shields, and he will be followed by Scott Kazmir, Matt Garza and Andy Sonnanstine. The bullpen will be made up of Grant Balfour, David Price, Dan Wheeler, J.P. Howell, Chad Bradford, Trever Miller and Jackson.
The following position players will most likely be included on the roster: catchers Dioner Navarro and Michel Hernandez; infielders Willy Aybar, Jason Bartlett, Akinori Iwamura, Evan Longoria, Carlos Pena and Ben Zobrist; outfielders Rocco Baldelli, Carl Crawford, Gabe Gross, Fernando Perez and B.J. Upton; and designated hitter Cliff Floyd.
Hinske and Percival each handled the news like professionals.
Rays' Game 1 lineup
"It's not about me," Hinske said. "It's about the team. They just said they wanted to carry an extra pitcher."
Percival said the news was "disappointing, but it's not tough to take."
"I went through two months where I wasn't healthy at all," said Percival, who led the Rays with 28 saves during the regular season. "So I understand their point of view, but I know that I'm healthy if they need me.
"They know mentally what I'm capable of. They just need to know I'm physically ready -- and I am physically ready now, and they know that I'm physically ready now. But the way they've got their bullpen set up, they needed somebody to throw some more innings."
Maddon said the roster decisions for the ALCS were every bit as difficult as those he made for the AL Division Series against the White Sox.
"They're all hard," Maddon said. "When you have guys that have played all year with the group and then you have to pick and choose at this time of the year, to say somebody's on and somebody's off, that's not fun, because, again, everybody is responsible for us being at this particular juncture. There's nobody that has not contributed. So when you do this, it's difficult. You still have to choose on what you think is the right thing to do."
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.