Infante exits game with lower back spasms

DETROIT -- Tigers second baseman Omar Infante has been back for nearly a week after missing more than a month with a sprained left ankle. On Saturday, however, his back was the problem that knocked him out.

Infante left the game against the Royals in the seventh inning with lower back spasms, the Tigers announced, and is considered day to day.

Before the game, Infante said he's still working his left ankle back to full strength. He made a nice play and whirling throw behind first base on David Lough's ground ball in the top of the sixth inning. He was spotted in the Tigers' dugout in the bottom of the inning, but did not emerge for the seventh. Ramon Santiago replaced him at second base.

Infante has been charged with one error since his return on Monday.