19% — Will Philadelphia be scheduled to play against Boston in a Christmas Day Game in the 2026-27 Pro Basketball regular season Kalshi 19% · 16 contracts · $1K volume · medium confidence Updated 2026-08-10 06:41:42 UTC Why this matters: This probability reflects the roughly 1-in-5 chance that Philadelphia and Boston will be matched against each other for an NBA Christmas Day game in the 2026-27 season. The NFL traditionally uses Christmas games as premium television content featuring marquee matchups, typically involving larger markets and playoff-caliber teams. Both Philadelphia and Boston qualify as major markets with storied franchises, making a matchup plausible but not certain. The NBA schedule is typically finalized in August, with the league balancing competitive equity, regional matchups, and broadcast appeal. Whether these teams meet on Christmas depends on their projected competitiveness, existing divisional/conference scheduling constraints, and the league's broader strategic choices for that day's slate. The uncertainty will be substantially resolved once the official 2026-27 schedule is announced. Key factors: - NBA typically schedules 3-5 games on Christmas Day, requiring selection from 30 teams with limited slots available - Both Philadelphia and Boston are historically major television markets with playoff-track records, increasing their likelihood of selection relative to smaller-market teams - The two teams play in the same conference (Eastern), which may favor or disfavor inter-divisional Christmas matchups depending on league strategy - Official 2026-27 NBA schedule announcement is expected in August 2026, which will definitively resolve this contract - Relative strength projections and competitive parity of both teams heading into 2026-27 will influence whether the league considers them attractive Christmas opponents Contracts: - Will Philadelphia be scheduled to play against Los Angeles L in a Christmas Day Game in the 2026-27 Pro Basketball regular season?: Los Angeles L — 29¢ Kalshi $462 (weight 34%) - Will Oklahoma City be scheduled to play against Houston in a Christmas Day Game in the 2026-27 Pro Basketball regular season?: Houston — 10¢ Kalshi $421 (weight 31%) - Will San Antonio be scheduled to play against New York in a Christmas Day Game in the 2026-27 Pro Basketball regular season?: New York — 57¢ Kalshi $229 (weight 17%) - Will New York be scheduled to play against Miami in a Christmas Day Game in the 2026-27 Pro Basketball regular season?: Miami — 9¢ Kalshi $205 (weight 15%) - Will Oklahoma City be scheduled to play against Minnesota in a Christmas Day Game in the 2026-27 Pro Basketball regular season?: Minnesota — 12¢ Kalshi $49 (weight 4%) - Will San Antonio be scheduled to play against Washington in a Christmas Day Game in the 2026-27 Pro Basketball regular season?: Washington — 5¢ Kalshi $0 (weight 0%) - Will San Antonio be scheduled to play against Denver in a Christmas Day Game in the 2026-27 Pro Basketball regular season?: Denver — 7¢ Kalshi $0 (weight 0%) - Will San Antonio be scheduled to play against Minnesota in a Christmas Day Game in the 2026-27 Pro Basketball regular season?: Minnesota — 10¢ Kalshi $0 (weight 0%) - ... and 8 more --- ## Methodology SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours. ## SF Signal - SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration. - No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only. --- *Last verified: 2026-08-10T06:20:49.490Z* By SimpleFunctions — https://simplefunctions.dev/ Cite as: "19% per prediction markets (SimpleFunctions, August 2026)" Canonical: https://simplefunctions.dev/answer/nbaxmasopponent Full data: https://simplefunctions.dev/api/public/query?q=Will%20Philadelphia%20be%20scheduled%20to%20play%20against%20Boston%20in%20a%20Christmas%20Day%20Game%20in%20the%202026-27%20Pro%20Basketball%20regular%20season Provider: SimpleFunctions — https://simplefunctions.dev