The Detroit Tigers have signed former closer Jose Valverde to a minor league contract. He will report to Lakeland, Fla. Valverde lost his job late last season and hasn't been able to latch on with a new team via free agency. The Tigers entered this season with a "closer-by-committee" plan after rookie Bruce Rondon struggled in the spring. Phil Coke blew a save at Minnesota on Wednesday. “There are no major league commitments to the deal," general manager Dave Dombrowski said today. "He is going to join our club in Lakeland -- our extended (spring training) program -- and throw to some hitters, then ... join our Toledo affiliate. There is no specific time frame on that. But he’s been throwing 40 to 60 pitches, bullpenwise, over the last time period. "So in talking to (agent) Scott Boras, he said he’s ready to go and face some hitters. So we figured we would sign him. Scott has talked to me extensively through the last few months. We were willing to take a look at him and see what happens.”