The intensity in the NBA postseason is well-known, but success often hinges on subtle nuances and small details that separate deep playoff runs from early exits. As the competition improves and the stakes rise, the margins for error become incredibly thin.
While superstar performances frequently dominate headlines and define series, overlooked elements can often prove decisive. These might include the contribution of an unexpected player, a coach`s strategic adjustments, or a specific facet of the game that shifts momentum in a crucial matchup.
Here are six potential X factors heading into the second round of the NBA playoffs:

Boston Celtics` Health
The Celtics have navigated recent playoff runs with relative ease. However, their recurring injury issues could become a critical factor over the coming weeks, assuming they advance deep into the postseason.
Last year, Kristaps Porzingis participated in only seven of their 19 playoff games, yet his 20 points in Game 1 of the NBA Finals were crucial. This season, key defender Jrue Holiday played his fewest games in four years and missed three first-round playoff games against the Orlando Magic due to a hamstring injury. Jaylen Brown (knee) and Jayson Tatum (wrist) are also dealing with ailments that have caused them to miss games recently in this postseason.
The length of Boston`s injury report might be the only element capable of slowing down the defending champions.

Rick Carlisle`s Experience
Indiana Pacers coach Rick Carlisle was notably ejected during a 2024 playoff loss to the New York Knicks. He then reportedly spent hours analyzing calls, sending dozens of video clips to the league office. This seemingly contentious act was part of a broader strategy to apply pressure on opponents, including game officials.
The calls appeared to balance out later in that series, and the Pacers, with their depth and health advantage, ultimately overcame the Knicks in seven games to reach their first Eastern Conference Finals since 2014. Carlisle boasts extensive playoff coaching experience, with over 150 games under his belt. His upset victories are not new; recall his 2011 Dallas Mavericks team that surprised many by winning the NBA Finals against the Miami Heat led by LeBron James in his first year there. Carlisle consistently demonstrates a sharp tactical mind and the ability to implement effective adjustments.
Indiana will likely be considered underdogs in subsequent rounds, a role Carlisle is very familiar with.

Jimmy Butler`s Road Fearlessness
`Playoff Jimmy` is a genuine game-changer, particularly in high-pressure situations away from home. His strong performance (20 points, 8 rebounds, 7 assists) in the Golden State Warriors` Game 7 victory on the road against the Houston Rockets was entirely consistent with his history in closeout games.
Butler delivered 28 points for the Heat in a Game 7 road win against Boston during the 2023 conference finals. In that same postseason, he scored 42 points to seal a road victory over the Milwaukee Bucks. A year prior, his 47-point, 9-rebound, 8-assist, 4-steal Game 6 in a Heat win at Boston in 2022 remains a playoff highlight. He also had 32 points to eliminate the 76ers in Philadelphia one round earlier.
When a crucial playoff game is on the road, Butler`s impact and value significantly increase.

Donovan Mitchell`s Shot Totals
Cleveland Cavaliers star Donovan Mitchell holds the seventh-highest scoring average in NBA playoff history (for players with at least 50 games) at 27.9 points.
He recently extended his record streak to eight consecutive Game 1s scoring 30 or more points, surpassing a mark he shared with Michael Jordan.
Mitchell clearly possesses the ability to score effectively in high-stakes moments. However, there`s a fine line between efficient scoring and relying on high volume. In the Cavaliers` Game 1 loss to the Pacers on Sunday, Mitchell scored 33 points, but it required 30 shot attempts.
Cleveland trailed throughout the game, and Mitchell seemingly felt the need to try and carry the team single-handedly, a pattern seen before in his career. When Mitchell attempts 30 or more shots in a playoff game, his team`s record is a concerning 1-5. Last season, for instance, he scored 50 points in a playoff game against Orlando but took 36 shots in a losing effort.
Furthermore, in Sunday`s game, he shot just 1-of-11 from the 3-point line. In playoff games where he attempts 11 or more 3-pointers, his teams are 2-7. This included two instances against the Celtics last season, both resulting in losses.

Jaden McDaniels` Defense
Jaden McDaniels had arguably his most impactful stretch for the Minnesota Timberwolves during the first round, averaging an impressive 17.4 points on 57% shooting in their five-game series win over the Los Angeles Lakers.
However, his significant contract ($130 million) reflects his primary value: defense. He is expected to be the lead defender tasked with guarding the Warriors` Stephen Curry in the second round. McDaniels guarded Curry on 161 possessions during the regular season. According to ESPN Research, this isn`t just the most by any defender this season, but the third most any opponent has guarded Curry in the past decade.
When guarded by McDaniels this season, Curry took 53 shots and had an effective field goal percentage of 53%, noticeably lower than his season average of 57%.

Denver Nuggets` Offensive Speed
Despite their reputation, perhaps influenced by star Nikola Jokic`s deliberate pace, the Denver Nuggets are deceptively fast in transition.
In fact, they led the league in fast-break points per game this season, averaging 20.1. While Jokic isn`t typically finishing fast breaks, his remarkable court vision and precise full-court passes are a primary engine of the Nuggets` potent transition offense.
This aspect is particularly relevant against the Oklahoma City Thunder, who are renowned as a brilliant half-court defensive team but can be vulnerable in transition. This season, the Thunder allowed the most points per game in transition across the NBA, giving up 12.3.