Sports Cross-Line Arbitrage Bot

This bot scans Polymarket sports event markets for cross-line arbitrage opportunities, where the combined implied probabilities across multiple outcome markets (or related lines within the same event) deviate from 1.0. Using the CLOB V2 API, it monitors order books in real time and places simultaneous buy/sell orders to lock in the spread.

Implementation is TypeScript-based, with the repo labeled `multiplex-invertsoap119/polymarket-sports-arbitrage-bot`. The 460KB repo carries a CLONE_FINGERPRINT flag, suggesting it may be a copy of a common template rather than original code. Topics include Kelly criterion, deep learning, and object detection, though these are likely keyword spam.

Entry logic centers on detecting mispricings across correlated sports markets; exit is achieved by holding the complete set to settlement or unwinding when the spread closes. Risk management focuses on liquidity gaps in sports books and the possibility of leg-out exposure.

Primary risks: low liquidity in niche sports markets, execution latency between legs, and possible misclassification of correlated markets that aren't truly arbitrageable. The clone fingerprint flag indicates low originality and possible low maintenance.