The NFL's replacement games are on for this weekend, and the networks aren't replacing them -- at least not yet.

CBS Sports will broadcast its full schedule of games Sunday and ABC Sports will televise the San Francisco 49ers-New York Giants game Monday night. NBC Sports, which is expected to make an announcement today, almost certainly will televise NFL games Sunday.

But what will happen after this weekend, the networks aren't saying.

The networks are contractually obligated to televise NFL games involving replacement players. But the networks have been examining the recently signed contract to see what their options are should the replacement games continue. If ratings slip greatly for the nonunion games, it appears likely that advertisers will ask for refunds from the networks, and in turn, the networks would seek a rebate from the league.

"We have not made any decision yet {about televising strike games beyond this weekend}," said CBS Sports spokesperson Susan Kerr, "and we won't decide until next week."

Most advertisers, too, are taking a wait-and-see attitude on their involvement beyond this weekend. Chrysler spokesperson Ann Lalas said the automaker "is evaluating our situation on a week-by-week basis" and has not made a decision on its plans for this weekend's games.

Sunday's canceled NFL games caused a big drop in ratings for CBS and NBC.

NBC's telecasts of the Toronto Blue Jays-Detroit Tigers and St. Louis Cardinals-Chicago Cubs baseball games received a 4.1 rating (percentage of TV homes tuning in) in overnight Nielsen ratings. When NBC showed NFL games the previous Sunday, the telecasts got a 12.9 rating. CBS' rebroadcast of Super Bowl XXI between the Giants and the Broncos received a 4.4 rating; a week earlier, CBS' NFL rating was a 19.9.

Meanwhile, the possibility of last weekend's canceled games being made up at the end of the season seemed more remote because of network obligations to other programming.

To make up those games, the NFL would push its postseason back a week, eliminating the open Sunday between the conference title games and the Super Bowl. But on that date -- Jan. 24 -- CBS is committed to an NCAA/NBA doubleheader and NBC is committed to an NCAA basketball game, figure skating and the Bob Hope Desert Classic golf tournament.

Another problem for the networks this weekend is that many games will not be seen in the home team's market because of the league's blackout rule, unless the owners modify it. Games are not televised in the home market if not sold out 72 hours in advance. Ticket sales are expected to be down across the league.

In addition, with the league offering refunds to ticket-holders, even sold-out games -- such as the Washington Redskins' game at RFK Stadium against the St. Louis Cardinals -- technically would not be sold out anymore. That could threaten the broadcast of the game in Washington, but a network source said the networks likely would ask the league for "special consideration" in such cases. Val Pinchbeck, the NFL's director of broadcasting, said the league probably would address the issue today.

The Redskins have sold out 159 consecutive games at RFK. And almost certainly, regardless of refunded tickets, their game Sunday will be on WUSA-TV-9.

The most recent game to receive special consideration was a 1985 postseason game in Anaheim, Calif., between the Los Angeles Rams and the Dallas Cowboys. The Rams persuaded the NFL to reduce the deadline from 72 to 48 hours. When the game still did not sell out, Rams owner Georgia Frontiere bought the remaining tickets to allow a local broadcast.