69% — Will Luis Peña play in a game for any team in the MLB before May 1, 2029 Leader: Before Aug 1, 2029 at 69% · Kalshi 69% · 8 contracts · $42 volume · medium confidence Updated 2026-05-28 20:43:59 UTC Tracks the leading outcome in a winner-take-all prediction market set with 8 outcomes. Why this matters: This contract predicts whether Luis Peña will appear in at least one MLB game before May 1, 2029—roughly three years from now. The 3% probability reflects significant uncertainty about Peña's ability to reach or return to active MLB roster status. The main drivers of this low probability are his current status and the competitive barrier to MLB roster spots; factors that could shift this include recovery from injury, successful minor league performance leading to promotion, or unexpected roster circumstances. The most critical near-term catalyst would be any official roster transaction or medical clearance announcing his return to active baseball. No specific scheduled event immediately resolves this, but each team's roster moves and injury updates over the next two seasons will provide evidence. Key factors: - Luis Peña's current employment status and whether he is actively signed or training with any MLB organization, minor league affiliate, or independent league - His injury history and medical clearance status, which directly constrains his availability for roster consideration - The total pool of available roster spots and competitive depth charts at his position, determining how likely promotion becomes even if performance warrants it - Performance metrics if he plays in minor league or independent settings, which would be observable indicators of readiness for MLB return - Any official transactions, contract signings, or team announcements regarding his status within the next 24-36 months Contracts: - Will Luis Peña play in a game for any team in the MLB before Aug 1, 2029?: Before Aug 1, 2029 — 69¢ Kalshi $9 (weight 21%) - Will Luis Peña play in a game for any team in the MLB before Nov 1, 2029?: Before Nov 1, 2029 — 69¢ Kalshi $9 (weight 21%) - Will Luis Peña play in a game for any team in the MLB before Nov 1, 2028?: Before Nov 1, 2028 — 67¢ Kalshi $0 (weight 0%) - Will Luis Peña play in a game for any team in the MLB before May 1, 2029?: Before May 1, 2029 — 58¢ Kalshi $9 (weight 21%) - Will Luis Peña play in a game for any team in the MLB before Aug 1, 2028?: Before Aug 1, 2028 — 27¢ Kalshi $0 (weight 0%) - Will Luis Peña play in a game for any team in the MLB before Aug 1, 2027?: Before Aug 1, 2027 — 17¢ Kalshi $0 (weight 0%) - Will Luis Peña play in a game for any team in the MLB before Nov 1, 2027?: Before Nov 1, 2027 — 16¢ Kalshi $0 (weight 0%) - Will Luis Peña play in a game for any team in the MLB before May 1, 2028?: Before May 1, 2028 — 14¢ Kalshi $15 (weight 36%) --- ## 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: 2026-05-28T20:20:07.215Z* By SimpleFunctions — https://simplefunctions.dev/ Cite as: "69% per prediction markets (SimpleFunctions, May 2026)" Canonical: https://simplefunctions.dev/answer/mlbdebut-lpena Full data: https://simplefunctions.dev/api/public/query?q=Will%20Luis%20Pe%C3%B1a%20play%20in%20a%20game%20for%20any%20team%20in%20the%20MLB%20before%20May%201%2C%202029 Provider: SimpleFunctions — https://simplefunctions.dev