DETROIT (AP) _ Detroit Lions rookie quarterback Joey Harrington left Sunday's game against Tampa Bay with an irregular heartbeat and was taken to the hospital for tests and observation.

Harrington played on one possession before leaving in the second quarter after he started to feel ill.

``Joey Harrington had an irregular heartbeat that returned to a normal rhythm before he left (Ford Field),'' team doctor Kyle Anderson said. ``Because Joey had no previous history of an irregular heartbeat, we had to make sure we took precautionary measures.''

Backup Mike McMahon threw a 46-yard pass to Bill Schroeder and an 18-yard touchdown pass to Schroeder on his first drive to cut Detroit's deficit to 10-7.

McMahon was benched in favor of Harrington, the third pick in the draft, after two games this season.

Harrington, the No. 3 overall pick out of Oregon, started his 12th straight game for the Lions. He entered Sunday's game completing just over 50 percent of his passes, with 2,294 yards, 12 touchdowns and 16 interceptions.