Network television ratings of the NFL's second weekend of replacement games tumbled again.

The networks, who have said they would decide on televising replacement games on a week-to-week basis, are expected to make an announcement today. NBC is likely to again televise replacement games, network sources said. Ratings, which dipped last week 29 percent from the previous week of regular NFL games, were down nearly another 10 percent.

In Nielsen's overnight ratings of the nation's largest TV markets: NBC's games Sunday averaged a 10.2 rating (percentage of TV homes tuning in), down 13 percent from last week's first replacement games and down 21 percent from Sept. 20, the last week of regular games. CBS' early-game average Sunday was 13.6, down 9 percent from last week and 26 percent from Sept. 20. Its late-game average -- the networks rotate week to week on doubleheaders -- was 10.7, down 1 percent.

NBC's coverage of the Giants-Cardinals baseball playoffs was a winner over CBS' NFL football in the 4 p.m. time slot nationally, but the Redskins-Giants telecast beat the baseball by more than a 4-to-1 margin in Washington. Nationally, the baseball got a 14.3 rating.

In Washington, the Redskins-Giants game attracted a 28.4 rating to baseball's 6.7. Slightly more than half of all homes watching TV in the D.C. area were tuned to the Redskins. Still, the Redskins' rating dropped 16 percent from last week and 21 percent from Sept. 20.

In New York, baseball beat the Redskins-Giants game, 16.4 to 6.2.