Miami Open: Kamil Majchrzak vs Learner Tien is a closed prediction market event on Polymarket with 10 markets, $578 total volume, and N/A in liquidity. Key markets: Miami Open: Kamil Majchrzak vs Learner Tien; Set 1 Winner: Majchrzak vs Tien; Majchrzak vs. Tien: Match O/U 21.5.