Michigan coach Jim Harbaugh bounced back from losing two assistants to rival Ohio State with what looks like a strong addition to his staff. Harbaugh hired Josh Gattis away from Alabama to be his offensive coordinator after losing assistants Greg Mattison and Al Washington to the Buckeyes on consecutive days this week. ''The offense and passing games under Josh's direction have achieved at a very high level throughout his coaching career,'' Harbaugh said.