May 2018 Supreme Court strikes down PASPA, opening the door for state legalization
Dec 2019 Governor Gretchen Whitmer signs HB 4916 (Lawful Sports Betting Act) legalizing both retail and online betting
Mar 11, 2020 Retail sports betting launches at three Detroit casinos — but COVID-19 shuts them down shortly after
Jan 22, 2021 Online sports betting launches statewide with multiple operators going live on day one
Sep 2023 bet365 launches in Michigan via Hollywood Casino at Greektown
Nov 14, 2023 PENN Entertainment rebrands Barstool Sportsbook as ESPN BET under a 10-year ESPN brand-licensing deal
Jun 2024 Caesars acquires WynnBET's Michigan sportsbook and iGaming business, partnering with Sault Ste. Marie tribe
Dec 2, 2025 Hard Rock Bet launches in Michigan, bringing Unity rewards program to the state
Dec 2025 Michigan sets new monthly gross gaming revenue record of $66.45M
Feb 2026 Governor Whitmer proposes per-wager fee ($0.25-$0.50) mirroring Illinois — faces immediate Republican opposition
May 2026 Michigan reports $382.5M combined iGaming + online sports betting gross receipts (+3.1% MoM); OSB handle $457.6M; $87.2M paid in state, city and tribal payments
Jun 2026 Combined iGaming + online sports betting gross receipts ease to $341.3M (−10.8% MoM) on the summer lull; OSB handle $366.1M; $84.7M paid in state, city and tribal payments
Jul 2026 Michigan reports $346.13M combined iGaming + online sports betting gross receipts (+1.4% MoM); OSB handle $355.2M; $85.8M paid in state, city and tribal payments
Aug 2026 Combined iGaming + online sports betting gross receipts ease to $337.6M (−2.5% MoM); OSB handle $330.5M; $85.2M paid in state, city and tribal payments