Mike Rosati was born January 7, 1968 in Toronto, Ontario. The 6th choice, 131st overall of the New York Rangers in the 1988 NHL Entry Draft, Rosati was a member of the St. Michael's Buzzers of the Ontario Junior "B" Hockey Leagues before making his debut in the Ontario Hockey League during the 1985-86 season with the Hamilton Steelhawks.
Rosati returned to Hamilton's line up in 1986-87 for his first full season in the OHL. After spending two full seasons in Hamilton, Rosati became a member of the Niagara Falls Thunder in 1988-89, where he spent his final year of Junior hockey before making his professional debut with the East Coast Hockey League's Erie Panthers in 1989-90.
After only one season of professional hockey in North America, Mike Rosati headed to Italy where he spent the next six years as a member of HC Bolzano. Rosati captured two Italian League Championships in 1995 and again in 1996 and was a member of Team Italy at the 1995 World Championships.
Following six years in Italy, Rosati signed with Alder Mannheim of the German League where he spent two years, capturing the 1997 German League Championship before signing as a free agent with the Washington Capitals in the summer of 1998.
The 1998-99 season saw Mike Rosati spend the majority of the season with the Portland Pirates of the American Hockey League, while playing in a handful of games with the International Hockey League's Manitoba Moose. Even though he spent the better part of his 1998-99 season in the minors, Rosati made his only NHL start in goal with the Washington Capitals during the 1998-99 season. In 28 minutes of action, Rosati shut down the opposition and earned his first and only NHL victory, in his first and only NHL game.
Rosati returned to Alder Mannheim of the German League in 99-2000, where he has spent the last three years while competing in his second World Championship in 2000.