Tip-off: Tuesday, 8:30 p.m. ET
Line: Cleveland -14.5, Total: 216

The Cavaliers will be looking to rebound from a disastrous Game 3 collapse when they take on the Celtics in Game 4 on Tuesday.

The Boston Celtics pulled off the biggest upset in NBA playoffs history on Sunday night—if you believe Vegas, at least. Boston entered Game 3 of their Eastern Conference Final series against the Cleveland Cavaliers as 17-point underdogs, and trailed by as many as 21 points before mounting a stunning comeback to win 111-108 on the road and cut the Cavs’ series lead to two games to one. There were several factors contributing to Boston’s heavy underdog status. First, there was the very recent evidence that they couldn’t hang with Cleveland: They were embarrassed 130-86 on their home court in Game 2 on Friday night (CLE -5). To make things worst, they lost All-NBA 2nd Team PG Isaiah Thomas for the remainder of the playoffs to a hip injury he suffered in the first half of that game. So coming off a humiliating loss, missing their best player and shooting 24 fewer free throws than their opponents (12 to Cleveland’s 36), Boston managed to outscore the Cavs by 19 points in the second half to pull out a stunning victory. The line for Tuesday night’s Game 4 opened at CLE -15, however, so those at sportsbooks aren’t feeling optimistic about a repeat performance. Since 1996, road teams allowing at least 103 PPG on the season that have trailed each of their last two games by at least 10 points at halftime (BOS) are 116-57 ATS. Over the last five seasons, games involving a road team that allowed at least 105 points in its last game (BOS) and a team coming off a loss of six points or fewer (CLE) are 157-99 Over against totals of at least 200. Thomas is the only player listed on either team’s injury report.

Boston had an unlikely high-scorer on Sunday night, as PG Marcus Smart (8.8 PPG, 4.9 RPG, 4.8 APG, 1.5 SPG, 1.0 BPG; all player stats are for playoffs) started in Thomas’ place and scored 27 points on 8-of-14 shooting, adding seven assists and five rebounds. Remarkably, the 29.1% career three-point shooter made seven of 10 treys, further cementing his reputation as a guy who makes big plays when it counts. The biggest play of the night, however, belonged to SG Avery Bradley (16.2 PPG, 3.9 RPG, 1.4 SPG), whose last-second three-pointer touched seemingly every part of the rim before falling through the hoop with 0.1 seconds remaining, giving the Celtics the win. He assumed the largest bulk of Thomas’ offensive load, scoring 20 points on a team-high 23 shots. Joining those two in the team’s crunch-time lineups were C Al Horford (15.4 PPG, 7.0 RPG, 5.6 APG), SF Jae Crowder (13.5 PPG, 6.3 RPG, 1.2 SPG) and C Kelly Olynyk (8.9 PPG, 3.0 RPG). Crowder and Olynyk were especially strong in Game 3, with Olynyk scoring 15 points on only eight shots and Crowder scoring 14 and grabbing 11 rebounds, six more than any other Celtic. PF Jonas Jerebko (3.1 PPG) served as an unlikely spark plug off the bench, posting an incredible plus/minus of +22 in only 13 minutes on the court. He may have played himself into a starting spot for Game 4, perhaps in the place of lumbering PF Amir Johnson (2.7 PG).

In the first two games of this series, Cleveland SF LeBron James (32.2 PPG, 8.3 RPG, 7.0 APG, 2.2 SPG, 1.5 BPG) looked even more unstoppable than he typically has throughout his decorated career. He made 26 of his 40 shots in those contests, and appeared to be toying with whichever hopeless Boston defender was charged with guarding him on a given possession. With those performances in the books, his disappearance in Game 3 was all the more bewildering. He scored 11 points on 4-of-13 shooting in 45 minutes, and he turned the ball over six times. One has to imagine that he’ll bounce back in Game 4, but it’s impossible to say so for sure when his off night in Game 3 came without explanation. His supporting cast was strong, at least in the starting lineup. PG Kyrie Irving (23.0 PPG, 5.6 APG, 1.5 SPG) was unperturbed by a Boston backcourt that is made better defensively with the absence of Thomas, scoring 29 points on 10-of-15 shooting and handing out seven assists. The third member of Cleveland’s Big Three, PF Kevin Love (17.4 PPG, 9.7 RPG) was also money, hitting five first-quarter threes en route to 28 points, 10 rebounds and three blocks. C Tristan Thompson (9.7 PPG, 9.9 RPG) stepped up with arguably his best game of this postseason, scoring 18 points and pulling down 13 rebounds. He was 3-for-4 from the field and 12-of-15 from the free throw line. SG J.R. Smith (6.8 PPG) hit the boards too with eight rebounds to accompany 13 points; Cleveland outrebounded Boston 53-45 as a team. Cleveland’s bench had only nine points on the night on 3-of-14 shooting.