NEW YORK — Thursday night games were such a success this season for CBS that the network extended its deal with the NFL through the 2015 season.

The agreement carries an additional year at the NFL’s option.

CBS will broadcast the first eight Thursday night games, which also will be simulcast on NFL Network. Then NFL Network will exclusively handle the final eight games.

The packages will include 14 games on Thursday nights and two late-season ones on Saturdays.

“I think there’s growth for better ratings,” McManus said. “The ratings were very strong considering the amount of blowouts we had.”

Five of the first seven matchups were decided by at least two touchdowns, including three by more than 30 points. Those seven games still averaged 16.5 million viewers between CBS and NFL Network, nearly double the 8.5 million for 2013 games that aired on NFL Network with simulcasts on local channels in each team’s home market.