There are only 25 more days until All-Star catcher Jason Castro and new Astros starter Scott Feldman report with the rest of the pitchers and catchers to Osceola County Stadium in Kissimmee, Fla.

Here are 25 things to look out for at Osceola County Stadium this spring.

1. Righthander Mark Appel, the top overall pick in the 2013 draft, will get a chance to showcase his impressive repertoire and make a case for an eventual call up to the majors.

2. Right fielder George Springer will land in Kissimmee with the hopes of a fan base resting on his shoulders. The expectations are unfair, of course, but that’s what happens after you combine for 37 home runs, 45 stolen bases and 108 RBIs in 2013 between Class AA Corpus Christi and Class AAA Oklahoma City.

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3. Jonathan Singleton, whose road to the majors was stalled by a 50-game suspension at the start of last season, reclaimed his spot as one of the top first base prospects in all of baseball with a brilliant winter ball showing in Puerto Rico. After a disappointing 2013, Singleton will get plenty of at-bats this spring to show if he’s ready.

4. Righthander Mike Foltynewicz will amaze you with a fastball that routinely hits 100 mph. In a farm system loaded with quality arms, this 6-4 kid will remind folks of J.R. Richard.

5. Shortstop Carlos Correa is still a teenager, but the Puerto Rican will be in his first major league camp. Other Astros prospects may be much closer to the majors, but Correa is arguably the Astros’ top overall prospect.

6. All-Star catcher Jason Castro tweaked his swing in the winter leading into last spring training, and the minor changes worked wonders. Now he just needs to get through spring training healthy. The recent Stanford graduate will be counted on to lead on the field and in the clubhouse.

7. Who will win the first base job? Considering that Chris Carter is the likely DH, Marc Krauss, Jesus Guzman, Japhet Amador, Singleton and Brett Wallace will get plenty of at-bats to make their cases.

8. Japhet Amador, a former Mexican League star, will cast a huge shadow this spring. The 6-4, 315-pound slugger was one of the top sluggers south of the border, and he’ll be hard to missed. He hit 36 home runs in Mexico last year, earning a contract from Jeff Luhnow.

9. Righthander Jarred Cosart flirted with a no-hitter in his major-league debut, and he remained impressive until he was shut down in mid September. He’ll try to refine his off-speed pitches in hopes of proving that he can be a front-of-the-rotation pitcher.

10. Seven years and seven teams since he last pitched for the Astros, righthander Chad Qualls will be called upon to help shore up the back end of the bullpen. He’ll fight for the closer’s spot this spring.

11. Jesse Crain was one of the best setup men in baseball last year, earning an American League All-Star nod with the Chicago White Sox. Unfortunately for him, however, he missed the second half of the season because of a right shoulder injury. The Astros signed him to a one-year deal in hopes that he bounces back from the injury and helps in the back end of the bullpen.

12. Six Astros minor-league clubs reached the postseason in 2013, and many of the top prospects have earned non-roster invitations to spring training. The front and back fields at Osceola County Stadium will be packed with high-end talent this spring, so it will pay to take a stroll to the back fields to watch the future stars.

13. Shortstop Jonathan Villar is one of the most dynamic players in baseball, as he proved while stealing home easily in one game last year. Even his bloopers are worthy of the highlight reel. The Astros will work on his discipline and baseball instincts while trying to maintain his energy.

14. Left fielder Robbie Grossman proved to be one of the feel-good stories of the year for the Astros as a rookie until an oblique injury robbed him of the final month of the season. He’s healthy and ready to claim the left field opening day spot this spring.

15. Although he’s overshadowed by some of the top pitching prospects in the organization, Asher Wojciechowski has quietly and steadily become a quality pitching prospect. He’s definitely one to watch this spring because there’s a good chance he’ll be in Houston at some point in 2014.

16. The 2014 spring training camp will be a bit of a homecoming for several Astros. Relievers Chad Qualls and Matt Albers are returning to the club after long absences. Jesse Crain played at San Jac and UH, and Scott Feldman had originally been drafted by the Astros.

17. On a rotation in need of veteran leadership, righthander Scott Feldman will have plenty of protégés looking up to him this spring. He’s expected to be at the front of the rotation and lead in the clubhouse as well. By all accounts, he has what it takes to set the tone for generations to come

18. Originally turned away from his tryout in Venezuela because of his lack of height, the diminutive Jose Altuve is now one of the Astros’ anchors. The 2012 All-Star will be counted on to help spark the offense yet again.

19. Dexter Fowler, who was acquired from the Colorado Rockies this winter, will give the Astros a legit leadoff hitter and solid defensive center fielder.

20. After a series of public relations mishaps in 2013, Astros owner Jim Crane has started the year off with a PR home run by agreeing to relocate the Community Leaders billboards. Now he must build on that positive goodwill and refrain from reminding the team that he once said he’d take their advice if they invested $10 million.

21. Can Lucas Harrell deliver in 2014 after a disastrous 2013? A year ago Harrell arrived in Kissimmee as a contender for the opening day start, which eventually went to Bud Norris. Harrell bombed in 2013 and was bounced out of the rotation in August. Many folks in the organization still believe in Harrell’s ability, and now he must show that he can be the type of starter the organization envisions.

22. Chris Carter set the franchise record for strikeouts in 2013. He also led the team in home runs and RBIs. A bit more contact and fewer strikeouts could definitely help the Astros.

23. First baseman Brett Wallace and outfielder J.D. Martinez will get another chance to show that they can live up to the high expectations they carried earlier in their careers.

24. A concussion robbed Max Stassi of an opportunity to show what he could do in the majors. He’s likely headed to Class AAA Oklahoma City to start the season, but he’ll have a chance to leave his mark this spring and show that he’ll be ready if something happens to Castro or Carlos Corporan.

25. Josh Zeid and Josh Fields were two of the brightest spots on an otherwise disastrous bullpen after the All-Star break. Now, they must fight for their places in the revamped bullpen.