Sunday's slate is four games deep and runs from early afternoon to nearly midnight. Cleveland heads to Toronto knowing one more win tightens the Raptors' grip on elimination. San Antonio arrives at Moda Center with a series lead and the biggest injury question mark of the first round still unresolved. Boston returns to Wells Fargo Center looking to build on its series advantage against a Sixers team that has been better than expected without Embiid. And in Houston, the Rockets host a Lakers team one win away from a sweep.

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Cleveland Cavaliers (4) at Toronto Raptors (5) | 1:00pm ET, ESPN

Game 4. Cleveland leads series 2-1.

Toronto's Game 3 performance was the kind of night a franchise holds onto. Barnes and Barrett both dropped 33 — matching their respective playoff career highs in the same game — and the Raptors went on a 47-23 second-half run that turned a close game into a statement. Barrett made six threes. Barnes had 11 assists. The Scotiabank Arena crowd was everything Toronto needed it to be, and for one night, this looked like a different series than what the first two games suggested.

Now comes the harder question: can they do it again? Cleveland's Game 3 was the first time this postseason Mitchell and Harden were held in check simultaneously — Mitchell had 18 points, Harden 14 — and Mobley, who has been the quieter piece of a three-man engine, will be motivated to re-establish himself after a game where the Raptors' activity and pace completely neutralized Cleveland's half-court scheme. Quickley remains out with the aggravated hamstring, which means Toronto's offense still runs through its wings with no true point guard to control pace and protect the ball under pressure.

The Raptors went nuclear from three in Game 3 — 14-for-23 as a team — and that number won't hold across a full series. Cleveland's defense is too disciplined over seven games for Toronto to keep shooting 60% from deep. But the real takeaway from Game 3 isn't the three-point shooting. It's that Barnes and Barrett played like a co-star duo rather than a primary and secondary option, and that version of Toronto is genuinely difficult to guard. If they can reproduce it today, the Cavaliers are facing a real series.

Toronto wins if Barnes and Barrett sustain their Game 3 production and Ingram — who has been largely invisible against Cleveland's defense — finds something in front of a home crowd that is now genuinely believing in this team. Going up 2-2 changes everything about how this series is discussed.

Cleveland wins if Mitchell and Harden reassert themselves as the most dangerous offensive tandem on the floor and Mobley brings his typical physicality in a bounce-back performance. The Cavaliers are still 2-1 and the more complete team. A road win today would put Toronto right back on the brink.

San Antonio Spurs (2) at Portland Trail Blazers (7) | 3:30pm ET, ESPN

Game 4. San Antonio leads series 2-1.

Wembanyama is questionable for Game 4 — and at least one prominent sports medicine specialist is calling his return a near-certainty. He was running full shooting drills at Friday's Moda Center shootaround and was visibly frustrated when he didn't receive clearance for Game 3. The concussion occurred on Tuesday night. Game 4 tips off Sunday afternoon, five days after the injury. The Spurs officially listed him as questionable Saturday evening. The final call comes hours before tip-off.

If he plays, this series changes shape instantly. Castle and Harper were magnificent without him — 33 and 27 points respectively in a hostile road environment — but San Antonio's net rating is plus-15 points per 100 possessions with Wembanyama on the floor versus neutral without him. He is the difference between a team that can win this series comfortably and a team that has to grind every game out of sheer guard play and toughness. Portland knows it. The Blazers were able to attack the paint in Games 2 and 3 in ways they couldn't manage in Game 1 precisely because Wemby wasn't there to serve as the final line of defense.

Portland has been impressive in this series regardless of opponent health. Avdija has been one of the first round's best two-way players, Henderson is finding his confidence as a playoff scorer, and Jrue Holiday off the bench has been a steadying presence in moments that have swung games in both directions. The Moda Center crowd gave them the energy they needed in Game 2. A split at home to fall behind 3-1 would be painful for a city that has been waiting years for a game like this.

San Antonio wins if Wembanyama returns and plays any version of himself — even at 70% — because that changes every defensive calculation Portland has been making for two games. If he's out again, Castle and Harper have to deliver a third consecutive marquee performance, which is a lot to ask of two rookies in their first postseason.

Portland wins if Wembanyama is ruled out again and the Blazers convert an opportunity that may not come back. Avdija needs a complete two-way game, Henderson needs to be the best guard on the floor, and the Moda Center needs to be as loud as it was in Game 2. A 2-2 series tie with Wemby still out would represent one of the first round's most remarkable developments.

Boston Celtics (2) at Philadelphia 76ers (7) | 7:00pm ET, NBC

Game 4. Boston leads series 2-1.

Boston has won two of three in this series and has done it the same way both times — competitive through three quarters, dominant in the fourth. Tatum's late-game takeover in Game 3 and Brown's 36-point effort were textbook Celtics playoff execution, and the pattern has been consistent enough that Philadelphia has to find an answer for it before it becomes a closing blueprint.

Embiid remains out, and the timetable for his return is still uncertain. Philadelphia is 1-2 in this series without him and very much alive — but the Sixers are also performing at what might be their ceiling. Maxey and Edgecombe have been extraordinary; George has been a steady third piece. But the Celtics have Tatum and Brown, and when both Jays are available and motivated, Boston's ceiling is higher than anything Philadelphia can match without its franchise player. George needs to be better in Game 4 than he was in any of the first three games if the Sixers want to extend this series.

The home court element is real. Philadelphia was 31-10 at home during the regular season and has now split games in this series when the Celtics haven't had a fourth-quarter lead. If the Sixers can keep Game 4 close through three quarters and lean on a crowd that has invested fully in this unexpected run, they have a formula. Embiid watching from the bench in street clothes every night is the kind of thing that either fuels a team or hangs over it. So far, it's been the former.

Philadelphia wins if George finally delivers the complete two-way performance this series has been waiting for him to produce, and the Wells Fargo crowd creates the kind of pressure that makes Boston's fourth-quarter execution feel fragile. Winning at home to tie the series 2-2 would be a massive statement.

Boston wins if the J’s find their rhythm before the fourth quarter rather than waiting until the final 12 minutes to take over. Tatum can and should be more dominant than he was in Game 3. A 3-1 series lead would put Boston firmly in control of a series that has been closer than expected.

Los Angeles Lakers (4) at Houston Rockets (5) | 9:30pm ET, NBC

Game 4. Los Angeles leads series 3-0.

No team in the history of the NBA has ever come back from a 3-0 series deficit. The Rockets need to win four straight games against a team that has beaten them convincingly three times in a row, without Kevin Durant for at least one more game, and in front of a home crowd that deserves more than a quiet elimination. JJ Redick has admitted mistakes and promised adjustments. Alperen Sengun has said the Rockets can still come back. The belief is admirable. The math is not.

The Durant ankle situation is the only real variable remaining in this series. Without him, Houston's offense has lacked the shot-creation and late-game reliability that defines the version of this team that was supposed to challenge for a deep run. Sengun has been strong in stretches and the supporting cast has competed, but LeBron James and Marcus Smart have been the two most impactful players across all three games — and their combination of playmaking, defense, and basketball IQ is exactly what wears teams down in a series that reaches a fourth game.

Houston's crowd deserves a win. Toyota Center has been electric, and the Rockets' young pieces have competed hard even when the series has gotten away from them. Giving their fans one more home game is the minimum ambition for tonight — and if Durant is closer to returning than the ankle timeline suggests, that possibility alone could generate the kind of energy that makes this building dangerous.

Houston wins if Durant somehow returns and the psychological charge of an impossible comeback attempt ignites something in this roster that hasn't been visible in three games. It has happened before in sports. Just never in the NBA from 3-0 down.

Los Angeles wins if LeBron and Smart play anything approaching their Game 3 level and the Lakers close this out with the composure of a team that has been in this situation before. History is on their side. Everything is on their side.

Four games, four series at inflection points. One player's status — Wembanyama — hangs over the afternoon the way a single variable can redefine everything downstream. One team — Houston — is staring at the end of its season. One series — Cleveland and Toronto — just had its narrative completely rewritten by a single dominant night and needs a second data point before anyone knows what to believe.

The first round ends series by series, and Sunday has the potential to close one of them entirely. Whether it does or not, the shape of this postseason becomes clearer by midnight. That's reason enough to watch every minute.