The NBA is officially back as the regular season tips off today with three marquee matchups giving basketball fans across the country plenty of entertainment.

Today's headline matchup features the defending champion New York Knicks hosting the new-look Philadelphia 76ers with LeBron James leading the team into Madison Square Garden at 7 p.m. ET.

Before 76ers vs. Knicks, the day starts at 3 p.m. ET when two Eastern Conference powerhouses in the Boston Celtics and Detroit Pistons face off, with the night capping off at 9:30 p.m. for a rematch of last year's Western Conference Finals matchup between the OKC Thunder and San Antonio Spurs.

Needless to say, your Tuesday schedule is practically packed. In fact, with all three games airing on NBC today, you can easily stream them all for free. Want to know how? Learn more about the various ways to stream the games for free below.

How to watch NBA opening day games today for free

Every game airs on NBC, which is available to be streamed for free through select streaming platforms like Fubo, Hulu+Live TV and YouTube TV.

NBA opening day schedule

• Boston Celtics vs. Detroit Pistons - 3 p.m. ET on NBC - Watch free

• Philadelphia 76ers vs. New York Knicks - 7 p.m. ET on NBC - Watch free

• Oklahoma City Thunder vs. San Antonio Spurs - 9:30 p.m. ET on NBC - Watch free

Fubo TV

The easiest way to stream the NBA tonight is with Fubo TV. You can enjoy a five-day free trial, unlimited cloud DVR and access to more than 200 live channels including ESPN, FOX, CBS and other local networks.

Hulu + Live TV

Hulu+ Live TV gives viewers access to hundreds of live channels, including NBC, so you can stream the NBA today. You can try Hulu+ Live TV for free with a three-day trial.

Hulu + Live TV has a few different subscription plans you can choose from and they vary by price and features like advertisements and additional streaming services.

YouTube TV

Get local and national broadcasts and nearly 30 dedicated sports channels on the YouTube TV Sports Plan for $44.99 for your first six months and $64.99 after that. Looking for out-of-market NFL games? Adding the NFL Sunday Ticket for $30 per month for 8 months for new users or $47.50 for returning users. YouTube TV offers a 10-day free trial to new subscribers.