Ruben Tejada sounds more and more like he might survive the winter as the Mets’ No. 1 shortstop. With Jhonny Peralta having signed with the St. Louis Cardinals on a four-year, $52 million deal that Sandy Alderson labeled surprising, the GM acknowledged the Mets do not have much in the way of attractive free-agent options (Rafael Furcal?). A trade is always a possibility, Alderson added. But the GM concluded that the goal is to improve the team as a whole. So the Mets’ resources may be best served getting invested in other positions, with the club hoping Tejada is adequate as the shortstop in 2014. Tejada hit .202 in 208 at-bats and had a prolonged minor-league stint last season before suffering a season-ending fractured right fibula Sept. 18. “You’re right to point out that the free-agent market is thin,” Alderson said. “It was thin with Peralta. It is thinner without Peralta. There really aren’t a lot of options in the free-agent market at this point. There are some trade possibilities. We’ve reached out to some clubs about shortstops. “But I think what I’ve said before is that this is a process of improving the team. It’s not about improving a position. And I know that the team is the sum of the parts, but that’s not to say we will be able to, or we will be best served, by addressing every single position. “So is it conceivable that Ruben Tejada or someone within in the organization is playing shortstop for us on Opening Day? I think the short answer is yes. “But, again, what we’re trying to do is improve the team as a whole. And so while shortstop is an obvious place for improvement, it’s not the only one. And if we’re successful elsewhere, as many clubs do, they get by on their strengths and hope to be as adequate as possible in those areas where they’re weaker.” Tejada just completed a four-week fitness and nutrition program outside of Ann Arbor, Mich., and intends to return in January. He currently is back in his native Panama, having just been cleared for full activity. “He made a lot of progress during that program, although he was somewhat limited as to what he could do weight-bearing on the leg,” Alderson said. “But he could certainly do upper body and bicycle and things of that sort.”