The first four League Championship Series games have averaged 7.49 million viewers, which is a 20 percent increase over the first four LCS games last year and the highest in the three years TBS and FOX have been sharing LCS coverage.

Saturday night's instant classic at Yankee Stadium on FOX, a 4-3, 13-inning walk-off win by the Yankees in Game 2 of the ALCS, drew 9.38 million viewers. That total was 87 percent more than Game 2 of last year's NLCS on FOX and the most viewers for a non-elimination LCS game on a Saturday since 2004.

In addition, the first three games of the LCS on Thursday and Friday averaged a U.S. household rating of 4.2, the best two-day average in terms of television viewership since 2006.

The NLCS, which is tied at 1, will continue with Game 3 from Citizens Bank Park in Philadelphia on Sunday at 8:07 p.m. ET on TBS. Game 3 of the ALCS, in which the Yankees have a 2-0 lead over the Angels, is Monday in Anaheim at 4:13 p.m. ET on FOX.