Altus trailed 6-0 at one time. The Bulldogs rallied to tie it 6-6 and sent the game to extra innings.
Altus scored two in the top of ninth but the Eagles plated three runs in the bottom of the ninth.
The Bulldogs lost two games Saturday.
Altus committed 14 errors in two games and lost Midwest City 11-1 and Duncan 8-0
The Bulldogs will host the Altus Tournament Thursday,
Altus will have a return match with Eisenhower at 6:30 p.m. at Kiwanis Park.