Francisco Liriano and the Twins are somewhat relieved, yet mostly mystifed over the rookie left-hander's latest test results. "The MRI came back exactly the same as the previous one," Twins general manager Terry Ryan said Thursday. "He has a ligament strain, but there is no structural damage. That's the good news. "Now we have to find out why he's having pain. We're not going to mess around with his future."