The deal sees the firm add the designation 'Banking Home of the Cleveland Indians' through to 2005.
Says Karen Haefling, chief marketing officer for KeyCorp: "We've enjoyed a strong relationship with the Cleveland Indians since the opening of Jacobs Field in 1994.
"The Indians organisation is a pillar of our community, and there's great enthusiasm here at Key for the team and building on the collaborative opportunities we've set before us."
Key's sponsorship consists of a variety of elements including presence of the Key logo on the main scoreboard and outfield wall, and support of the Cleveland Indians' community relations programmes.
