As MLB.TV celebrates 21 years of streaming live baseball, you can catch many of Saturday's games as part of a free preview. Since the first game streamed live on MLB.TV in 2002, more than 100,000 games have been watched by baseball fans around the world, and if you don't already subscribe, now is a great time to do just that.

Of the 15 games scheduled for Saturday, 12 are available to stream for free as part of this special preview (blackout and other restrictions apply). Those include some marquee matchups you don't want to miss, including a classic showdown between the Dodgers and Red Sox at Fenway Park, the Braves taking on the Giants in San Francisco, and two teams making surprise postseason bids as the Reds face the D-backs in Arizona.

With MLB.TV, not only do you get MLB games live or on demand, you also have access to pre- and postgame shows where available, as well as MLB Big Inning, which provides live look-ins, highlights and all the best action from around the league seven days a week. You can also follow the Minor Leagues with access to live-streamed MiLB games.

There's even more -- with MLB.TV, you can check out MLB’s huge on-demand content library, featuring documentaries, classic games and original shows.

Don't miss Saturday's free MLB.TV preview in celebration of the streaming service's 21st anniversary. And don't miss any of the action the rest of the way as postseason races heat up and October nears. MLB.TV has you covered.