The second round of the 2025-26 Prvenstvo BiH playoffs begins with the cleanest possible analytical matchup: Borac Banja Luka, 21-3 and ranked No. 1 in the CourtFrame Power Index, against Siroki Brijeg, 20-4 and ranked No. 2. The series is tied 0-0 in a best-of-seven format, making Sunday’s Game 1 at Sportska dvorana Borik less about survival and more about establishing the mathematical terms of the matchup.
There is no recent head-to-head history to lean on, which makes the current-form data unusually important. Borac arrives with a 100.00 CPI, a 9.7-point CPI differential over Siroki’s 90.32, and a home profile that has been pristine: 6-0 with 83.8 points per game. Siroki counters with the better season scoring average overall, 89.8 points per game to Borac’s 83.1, and a road split that remains dangerous at 3-2 while averaging 87.2 points.
Both teams enter with eight days of rest and zero games in the last seven days. There are also no significant injuries reported on either side. That removes two common sources of playoff variance — fatigue and availability — and shifts the preview toward basketball fundamentals: shot quality, turnover pressure, rebounding leverage and tempo control.
Matchup Snapshot
| Category | Borac Banja Luka | Siroki Brijeg |
|---|---|---|
| Record | 21-3 | 20-4 |
| Recent Form | LWWWW | WWLWL |
| CPI / Rank | 100.00 / No. 1 | 90.32 / No. 2 |
| Season PPG | 83.1 | 89.8 |
| Last 10 Offensive Rating | 112.9 | 111.4 |
| Last 10 Defensive Rating | 97.9 | 102.1 |
| Last 10 Net Rating | +15.0 | +9.3 |
| Last 10 Pace | 55.0 | 61.1 |
| Rest | 8 days | 8 days |
The Core Question: Whose Possession Environment Wins?
This matchup begins with a pace disagreement. Borac’s last-10 profile is built at 55.0 possessions, while Siroki has operated at 61.1. That 6.1-possession gap is not cosmetic. In a playoff opener between two efficient offenses, each additional possession increases the chance that Siroki’s depth of scoring can matter; each removed possession increases the value of Borac’s half-court efficiency and defensive discipline.
A useful way to frame the tempo battle is through an expected-possession midpoint. If neither team fully dictates the game, the natural blend of their recent paces lands around 58 possessions. At that pace, efficiency becomes more predictive than raw scoring averages. Borac’s recent offensive rating of 112.9 slightly edges Siroki’s 111.4, while Borac owns the larger defensive advantage, allowing 97.9 per 100 possessions compared with Siroki’s 102.1.
That creates the first major expected-value edge of the series: Borac is not merely winning with offense. It is winning the efficiency spread. Its +15.0 net rating over the last 10 analyzed games is 5.7 points better than Siroki’s +9.3. In a lower-possession environment, that margin becomes more meaningful because there are fewer opportunities for random shot-making swings to erase structural advantages.
Efficiency Profile: Borac’s Shot Quality vs. Siroki’s Scoring Volume
Borac’s recent shooting indicators are elite within this context: 70.9 percent true shooting and 71.1 percent effective field goal percentage. Siroki is not far behind, posting a 67.9 true shooting percentage and 66.1 effective field goal percentage, but the gap matters because both teams already score efficiently enough that small advantages compound over a series.
| Efficiency Metric | Borac | Siroki | Edge |
|---|---|---|---|
| True Shooting % | 70.9% | 67.9% | Borac +3.0 |
| Effective FG % | 71.1% | 66.1% | Borac +5.0 |
| FG % | 56.1% | 55.4% | Borac +0.7 |
| 3PT % | 33.0% | 32.7% | Borac +0.3 |
| FT % | 61.6% | 67.7% | Siroki +6.1 |
The contrast is subtle but important. Borac’s superiority is most visible in effective field goal percentage, suggesting its shot diet and conversion profile have been more damaging from the field. Siroki’s clear counterweight is at the free-throw line, where its 67.7 percent mark exceeds Borac’s 61.6. In a close Game 1, that could become one of the few efficiency categories where Siroki can reliably gain ground without needing to speed the game up.
Because no foul-rate burden is available from the injury or roster context, the cleanest conclusion is strategic rather than predictive: Borac should prefer a game decided by live-ball execution and field-goal efficiency; Siroki should value pressure possessions that generate free throws and prevent Borac from playing entirely in rhythm.
CourtFrame Control Index: A Custom Lens for Game 1
For this preview, CourtFrame’s control lens combines three components: net rating, rebound percentage and turnover rate. The logic is simple. Net rating captures scoreboard efficiency, rebound percentage captures possession recovery, and turnover rate captures possession leakage. In playoff basketball, those three variables usually decide whether a team’s offensive efficiency is sustainable or fragile.
| Control Component | Borac | Siroki |
|---|---|---|
| Net Rating | +15.0 | +9.3 |
| Rebound % | 57.2% | 52.6% |
| Turnover Rate | 20.4% | 18.0% |
Borac’s profile is stronger in two of the three categories. The rebounding gap is especially relevant: Borac’s 57.2 percent rebound rate gives it a 4.6-point advantage over Siroki’s 52.6. That matters against a Siroki team with multiple productive rebounders, led by Skedelj Miha at 8.5 rebounds per game, J. McCreary at 8.4 and Bosnjak Matej at 6.9.
The one caution for Borac is turnover rate. Its 20.4 percent mark is higher than Siroki’s 18.0, despite Borac averaging only 11.2 turnovers compared with Siroki’s 11.0 in the recent sample. In practical terms, Borac’s lower pace makes each turnover more expensive. A giveaway in a 55-possession game has more leverage than the same mistake in a 61-possession game.
Player Matchups: Interior Gravity and Playmaking Balance
Borac’s player structure begins with D. Makitan, whose 15.7 points and 11.5 rebounds per game give the home side its clearest two-way anchor. Around him, Borac has multiple playmaking channels: T. Harris averages 5.8 assists, D. Talic adds 4.1, and Makitan contributes 3.4. That distribution fits the team’s 90.1 assist rate, the highest passing indicator in the matchup.
Siroki’s offensive pressure is more star-weighted at the top. J. McCreary leads the group with 20.3 points and 8.4 rebounds per game, while Trice D’Mitrik adds 16.7 points and 5.5 assists. Bosnjak Matej supplies another high-volume scoring-rebounding blend at 16.2 points and 6.9 boards. The away side has enough creation to punish defensive overloading, but the question is whether it can do so without letting Borac dictate pace after makes and defensive rebounds.
| Borac Key Player | PPG | APG | RPG |
|---|---|---|---|
| D. Makitan | 15.7 | 3.4 | 11.5 |
| D. Talic | 12.5 | 4.1 | 4.5 |
| T. Harris | 11.8 | 5.8 | 3.8 |
| Siroki Key Player | PPG | APG | RPG |
|---|---|---|---|
| J. McCreary | 20.3 | 1.7 | 8.4 |
| Trice D’Mitrik | 16.7 | 5.5 | 3.7 |
| Bosnjak Matej | 16.2 | 3.7 | 6.9 |
Home Court and the Probability Shape of the Series
Game 1 carries amplified value because Borac’s home split has been flawless in the available sample: six wins, no losses and 83.8 points per game. Siroki has been capable away from home, going 3-2 with 87.2 points per game, but the venue edge is not just about scoring. It is about whether Borac can turn home-court familiarity into pace suppression, defensive rebounding and cleaner half-court possessions.
The CPI gap reinforces that interpretation. Borac’s 100.00 index and No. 1 ranking give it the stronger overall profile, but Siroki’s 90.32 and No. 2 ranking make this less a mismatch than a clash of elite teams with different risk signatures. Borac’s expected value comes from repeatability: better net rating, better defensive rating, better rebounding percentage and more efficient shooting. Siroki’s path comes from volume: higher season scoring, faster recent pace and a top-end scoring trio capable of bending matchups.
What Decides Game 1
1. The first six possessions after defensive rebounds. Borac’s rebounding advantage only becomes decisive if it converts stops into controlled offense. Siroki wants those moments to become tempo accelerators.
2. Turnover math. Borac’s 20.4 turnover rate is the primary vulnerability in an otherwise superior control profile. If Siroki can turn that into open-floor chances, it can make the game faster without needing to dominate the half court.
3. Free-throw conversion. Siroki’s 67.7 percent free-throw shooting gives it a measurable edge over Borac’s 61.6. In a Game 1 with two rested teams and no reported injury limitations, late-game margins may come from the simplest expected-value source on the floor.
4. Assist creation versus individual pressure. Borac’s 90.1 assist rate points to a more connected offensive model, while Siroki’s leading scorers give it direct matchup force. The winner of that stylistic divide will likely define the series’ opening statement.
Preview Verdict
Borac enters Game 1 with the broader analytical case: No. 1 CPI ranking, perfect home split, superior recent net rating, stronger defensive efficiency and a meaningful rebounding edge. Siroki, however, has enough scoring and pace pressure to make any Borac turnover stretch costly.
The most likely shape is a possession-control game rather than a pure shootout. If Borac holds the pace near its preferred 55-possession environment and keeps Siroki off the offensive glass, its efficiency profile should travel cleanly into Game 1. If Siroki pushes the game closer to its 61.1-possession rhythm and leverages McCreary, D’Mitrik and Bosnjak into repeated advantage situations, the opener becomes far more volatile.
For a best-of-seven series between the league’s top two CPI teams, that is exactly the right starting point: not a referendum after one night, but a high-value first data point in a matchup likely to be decided by who controls the terms of engagement.