CHICAGO (AP) _ Chicago Cubs pitcher Kevin Tapani left the game in the eighth inning with a knee injury Friday.

Tapani had pitched seven scoreless innings and the Cincinnati Reds were in danger of being shut out for the first time this season. But after giving up singles to pinch-hitter Alex Ochoa and Chris Stynes in the eighth, manager Don Baylor sent the trainers out to check Tapani's right knee.

Tapani, who has had patella tendinitis in his knee all season, left with a 4-0 lead.

There was a brief conference on the mound before Tapani left for the dugout. It was later announced that he had a strained patella tendon in his right knee. He's listed as day-to-day.

Steve Rain replaced Tapani, and quickly gave up homers to Ken Griffey Jr., Dmitri Young and Pokey Reese to give Cincinnati a 6-4 lead.