Game 2 is also available on NBC Sports Network, which is not to be confused with the regional home of the Celtics, NBC Sports Boston. The game does not air nationally on NBC, which has Spurs-Trail Blazers at 8 p.m.

NBC Sports Network, a national channel that NBC revived in 2025, has limited availability. It is part of streaming service YouTube TV’s channel package. Cable provider Xfinity also carries it as part of its basic tier.

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Until this season, Celtics first-round playoffs games aired on NBC Sports Boston, unless they were exclusive to a national network. That usually happened a couple of times in a first-round series.

But as part of the new national NBA broadcast rights deal — which brought in NBC and Amazon Prime Video as partners this season, joining holdover ESPN/ABC — regional sports networks such as NBC Sports Boston lost the rights to carry any playoff games.

Here’s your preview.

When: Tuesday, 7 p.m.

Where: TD Garden, Boston

TV, radio: NBCSN, Peacock, WBZ-FM 98.5

Line: Boston -14.5. O/U: 216.0.

76ERS

Season record: 46-38. vs. spread: 42-40, 2 pushes. Over/under: 39-44, 1 push

Last 10 games: 5-5. vs. spread: 4-6. Over/under: 2-8

CELTICS

Season record: 57-26. vs. spread: 50-33. Over/under: 30-53

Last 10 games: 8-2. vs. spread: 8-2. Over/under: 4-6

TEAM STATISTICS (postseason)

Points per game: Philadelphia 91.0, Boston 123.0

Points allowed per game: Philadelphia 123.0, Boston 91.0

Field goal percentage: Philadelphia .389, Boston .500

Opponent field goal percentage: Philadelphia .500, Boston .389

3-point percentage: Philadelphia .174, Boston .364

Opponent 3-point percentage: Philadelphia .364, Boston .174

Stat of the day: The Sixers shot 17.4 percent (4 of 23) from three in Game 1.

Notes: Brown scored 26 points on 11-of-21 shooting from the floor, while Tatum — playing in just his 17th game since returning last month from a ruptured Achilles tendon — finished with 25 points on 9-of-17 shooting, grabbed 11 rebounds and dished seven assists. … The Celtics held the Sixers to just 35-of-90 field-goal shooting (38.9 percent). … While Game 1 was a defensive masterclass from the Celtics, Tatum said they cannot let up against a potentially prolific Philadelphia side in Game 2. “They have some really talented scorers over there, especially with [Tyrese] Maxey and [Paul] George,” he said. “Kelly [Oubre Jr.[ rained five [3-pointers] in the play-in game.” … Maxey, who earned an All-Star nomination en route to averaging 28.3 points per game in the regular season, finished with a team-high 21 points Sunday. George added 17, but no other Sixer managed more than rookie VJ Edgecombe’s 13 points. “I don’t think we matched physicality [or] toughness,” George said. “There was just no resistance at a lot of times throughout the game. That’s just not playoff basketball.” … Philadelphia will continue to seek interior offensive contributions as the Sixers adjust to playing without former MVP Joel Embiid. The big man underwent an emergency appendectomy while on a road trip in Texas during the final week of the regular season. His status for the series against Boston is undetermined. … Embiid averaged 26.9 points per game during the regular season. His fill-ins at center on Sunday — the youngster Adem Bona and veteran Andre Drummond — scored three and two points, respectively. … The only Celtic on the injury report is Ron Harper Jr., who is probable with a right ankle sprain. He played four minutes in Game 1.

Information from Field Level Media was used in this report

Katie McInerney can be reached at katie.mcinerney@globe.com. Follow her on Instagram at @katiemac.sports. Chad Finn can be reached at chad.finn@globe.com.