Hanrahan recorded ERAs of 2.70 or better in three of four seasons before missing most of last season because he needed Tommy John surgery.
Ray will take the spot of 2013 ERA champion Anibal Sanchez, who is on the 15-day disabled list with a laceration on his middle finger.
Shortly before the start of a spring training game last month, Dave Dombrowski paused briefly to sign a few autographs for fans.
Reaction to the Miguel Cabrera contract has been swift and divided.
ESPN’s Buster Olney Says Other MLB Execs Appalled, Disgusted, In Shock Over Cabrera Deal; Did Tigers Overpay?
Less than a week after Max Scherzer rejected their offer, the Tigers sealed a much bigger deal with a much more established superstar.
A late move could still be made that bumps the rookie back down, but only six days remain until Opening Day.
Scherzer turns 30 in July, so he would have been 38 at the end of such a contract.
Even outside of the injuries, it has been a rather bumpy offseason for the Tigers.
Regardless of who made the offer and who rejected it, a contract of $24 million or more per year places too high a value on Scherzer.
The day after announcing shortstop Jose Iglesias will miss four to six months, the Tigers delivered more bad news.