All you have to know about how the Texas Rangers are trying to build their team for the future is look at their starting rotation. Yu Darvish is under contract through 2017. Derek Holland's current contract could run through 2018. Alexi Ogando is under team control through the 2016 season. And after Matt Harrison signed a five year, $55-million deal on Thursday that includes a vesting club option, the left-hander is Texas property through at least the 2017 season. Ogando, who is making the transition back to start this spring, is the grizzled veteran of the four at 29. "To look up and have Matt and Yu and Derek and Alexi and know that the core of the rotation's going to be here," Texas general manager Jon Daniels said. "You're talking about three guys that are 27 or under that are All-Stars and Derek had a shutout in the World Series. "These are accomplished young pitchers. We're not done. We're always looking to get better. But it is evidence that all the efforts we've made on the scouting and development side that has put this young rotation together is paying off." Harrison is proof of that. In 2010 he wasn't even on the postseason roster. But over the next two seasons, Harrison developed into an All-Star pitcher who is among the top five in victories in the American League over that span. Now he's happy to be part of a rotation which has a bright future.