CINCINNATI -- Triple-A Louisville's playoff run will keep the Reds' September callups minimal, for now.

On Monday, the day that Major League rosters expanded, Cincinnati announced no roster moves. For fans looking down Interstate 71, don't expect many Bats players to make their way north for what could be a few days, or a couple of weeks.

After the regular season ended on Monday, Louisville will participate in the International League playoffs. Barring an emergency, the Reds will delay significant promotions so Louisville can remain at full strength during its postseason.

Monday was an off-day for the Reds, and no transactions were announced. On Tuesday, reliever Jared Burton is expected to be activated from the 15-day disabled list. Burton hasn't pitched since July 10 because of a strained latissimus muscle in his right side.

Starting pitcher Ramon Ramirez, who made one start after a promotion from Louisville on Saturday, was sent to Class A Sarasota on Sunday in a procedural move. Ramirez is also expected to be back with the Reds on Tuesday.

The Reds have kept a tight lid on their plans for other September callups. Players already on the 40-man roster seem likely to have the best chances, including Louisville relievers Danny Herrera and Todd Coffey, starting pitchers Homer Bailey and Bobby Livingston and infielders Paul Janish and Danny Richar. An infielder recently sent back to Louisville, Adam Rosales, is sure to return.

It's much harder for players not on the 40-man roster to get promoted because it would require an additional move to create room. If the Reds make promotions outside of the 40-man roster, lefty starters Matt Maloney and Adam Pettyjohn could get consideration. Outfielder and 2006 first-round Draft pick Drew Stubbs could also have an outside shot, especially since the big league club is short on outfielders.