Let’s be honest about the Eastern Conference finals: nobody reading this expects the Indiana Pacers to beat the Boston Celtics. All five CBS Sports predictors chose the Celtics, and none predicted that the series would go seven games. Take a look around the internet, and you’ll find mostly similar predictions. In one corner sits a 64-win team that has reached the Eastern Conference finals in six of the past eight seasons. In the other sits a 47-win team in its first playoff run as a group that needed significant opposing injuries in the first two rounds just to get here. The series line at DraftKings to open things up is Celtics -900, representing implied odds of 90% in Boston’s favor.
However, if Vegas picked winners, we wouldn’t have to play the actual games. Upsets happen, especially to the Celtics. Boston has lost as a favorite in three of the past four postseasons. Last spring, they blew their chance at the NBA Finals to the No. 8-seeded Miami Heat. These Pacers, by basically any quantitative measure, are better than that Heat team was. There is a scenario, however unlikely, in which Indiana beats Boston. So let’s game this out and figure out what exactly an Indiana upset would look like.
Pray to the Shooting Gods
Boston’s Shooting Dominance
There are plenty of reasons not to challenge the Celtics to a shootout. Boston led the NBA in 3-point attempts and came just a hair shy of leading the league in percentage as well. They made 140 more 3-pointers than any other team this season and came 12 shy of making more than any team in history. More importantly, they did that without a single player finishing in the top seven in the NBA in terms of made 3-pointers. Jayson Tatum ranked eighth with 229. He was the only Celtic in the top 20. Boston just became the first team in NBA history in which every rostered player made a 3-pointer. Everyone on their roster can shoot.
Indiana’s Shooting Prowess
Of course, the same is true for Indiana. The Pacers just had the best shooting playoff game in NBA history, but even over the greater season-long sample, the Pacers ranked ninth in 3-point percentage. More importantly, 3-point shooting introduces the important element of variance. When one team is significantly better than the other on paper, the underdog’s best tactic is to create a game as subject to randomness as possible. If both teams are firing up a steady stream of 3-pointers, the more the outcome becomes subjected to luck. You don’t need to outshoot the best shooting team in the NBA 82 times. You just need to do it four times out of seven. That’s well within the bounds of random chance.
Defensive Strategy
But more importantly, 3-pointers are the shots Indiana is designed to defend. No team is more intentional about the shots it allows than the Pacers. Indiana opponents averaged only 29.3 3-point attempts per game last season, more than two full 3’s fewer than any other team. The other end of that spectrum is that no team allowed more than Indiana’s 29.9 shots in the restricted area per game. Boston, usually for better but occasionally for worse, is a team built to win or lose by their jumper. The moment they realize how easily they can get to the basket in this series is the moment that they win it. But if Indiana can get them to keep shooting from deep, they’ve at least left open the possibility that Boston misses more shots than usual. They might get swept in a barrage of triples, but there’s no good strategy against a team as dominant as the Celtics. We’re looking for the least bad option.
Dictate Tempo and Control the Ball
Indiana’s Fast Pace
This is another potentially counterintuitive strategy in an upset attempt. Typically, underdogs are best served by slowing the game down. This is, again, a variance issue. The more possessions available to a favorite, the more chances it has to exert its superiority. But tempo is Indiana’s entire playing style. The Pacers rank No. 2 in the NBA in pace during the regular season, and they just managed to exert their pace on the NBA’s slowest team, the New York Knicks, in the second round. Playoff games, especially as we get deeper into the postseason, are never going to be the sort of track meets that you might see in, say, December or January, but that doesn’t mean tempo is irrelevant.
Ball Control
The Pacers are used to playing fast. Other teams, including the Celtics, who rank No. 19 in pace, are not. This matters more than anything from a ball-control perspective. No team turned the ball over less often this season than the Celtics. Of course, as we know, the Celtics (specifically, Jaylen Brown) have developed a bit of a turnover problem in high-leverage moments over the last few postseasons. Perhaps they’ve truly gotten over that weakness. But Indiana pressured Jalen Brunson full-court quite often in the Knicks series, and they’re likely going to do the same at points in this one.