No matter how much fans clamor for Kyle Tucker, the Astros' top position player prospect, he will not make the opening day major league roster, manager A.J. Hinch said Friday. Tucker, a 21-year-old right fielder who bats lefthanded, has set the Gulf Coast League on fire in spring training. On Thursday, he hit his third home run in five games. He if 5-for-13 with eight RBIs. "He's a good-looking, young player who is doing a great job of making a great first impression," Hinch said. "He's a great talent. That's where it starts and ends." Tucker's playing time will diminish when minor leaguers arrive in camp next week and as major league starters require more reps at the end of March to prepare for the season. "His contribution at the major league level will come at some point, if he continues to progress, but it's not going to come at the end of this month," Hinch said. "No matter what he does, we don't feel like it's in the best interest for him. "That timeline always moves based on your readiness, but that's not defined by the first two weeks of spring." Tucker produced with eye-catching power (25 HR, 90 RBIs, 21 steals and an .874 OPS) least season, which he finished in Class-AA Corpus Christi. He also struck out 109 times. He currently is focusing on improving his plate discipline.