Craig Gentry’s unexpected power show represents the first significant change brought on by Dave Magadan, the Texas Rangers’ new hitting coach. Gentry hit his second homer of the spring, against Cleveland right-hander Brett Myers, during a 7-6 win over the Indians on Sunday. Gentry has two homers in 25 at-bats for the spring. He has one over-the-fence homer in 423 career major-league at-bats. “I’ve been lucky enough to run into a couple,” Gentry said. Luck has little to do with it. In the off-season, Gentry focused on getting stronger. Gentry, in concert with Magadan, has also made changes in his swing that enable him to drive pitches more often. “He’s definitely helped out a lot with some things,” Gentry said. Gentry is hitting .360 with three extra-base hits in 25 at-bats. A year ago, he hit .304 with 16 extra-base hits in 240 at-bats during the regular season. He is growing into more than a singles hitter, manager Ron Washington said. “He’s getting through the ball pretty good,” Washington said. “They’ve left some pitches on parts of the plate where he can get through it, and he has driven it.”