It's Opening Day, which is as good of a time as any to look at which prospects, both high-profile and non=descript, are now in the majors, and perhaps for how long.
Baltimore Orioles: Jonathan Schoop made the roster, which we knew was a possibility, thanks to terrible other choices at second base and his ability to play third base as well while Manny Machado is out. Kevin Gausman did not make the team, even though there was consideration to keep him in the major league bullpen. The Orioles made the right decision, however, and will let him work as a starter in Triple-A, where he will be on call for a promotion at any time.
Boston Red Sox: Xander Bogaerts inclusion on the opening day roster turned out to be a given as expected, but Jackie Bradley's was not. The center field prospect lost out to Grady Sizemore after a poor spring from the rookie. He may still be up soon if Shane Victorino has to go on the DL, but for now he's in Triple-A waiting for an opportunity.
Chicago White Sox: The White Sox handed Erik Johnson a spot in their rotation before spring training even got under way but decided they were not ready to go with Matt Davidson at third base. An injury to Gordon Beckham opened the door for second baseman Marcus Semien to get playing time.
Cleveland Indians: No prospects on the Indians roster. Boo Indians.
Detroit Tigers: It was the Nick Castellanos show this spring and he didn't disappoint. He's the team's best young player and he played like it all of March. If he can carry that over into the spring, the Tigers will have already answered one of their few question marks for the season. The Tigers also kept Tyler Collins on the big league roster, making the jump from Double-A to help hold down left field until Andy Dirks returns. Collins will platoon with Rajai Davis.
Houston Astros: No prospects on the Astros roster, and they will probably keep it that way until the super two deadline has safely passed. George Springer will lead the way, likely around June, but there will be plenty of prospects on this team by season's end.
Kansas City Royals: There's no doubting that the Royals are going for things this year, and they doubled down on that plan by keeping Yordano Ventura in the rotation. He's my pick for AL Rookie of the Year.
Los Angeles Angels: No prospects on the Angels roster. Boo Angels and your terrible farm system.
New York Yankees: No prospects on the Yankees roster. Boo Yankees and your old roster.
Seattle Mariners: James Paxton will be in the Mariners rotation from the start of the season, and Taijuan Walker will join him as soon as he gets off the DL. The majority of the rest of the Mariners impact young talent was promoted last season.
Texas Rangers: Michael Choice has more of an opening to play in Texas than he would have in Oakland. He's on the major league roster but is scheduled to share at-bats for now, playing mostly against lefies. I expect him to hit his way into the lineup more frequently.
Toronto Blue Jays: No prospects on the Blue Jays roster, although Marcus Stroman will be up at some point this season and Aaron Sanchez looked significantly better this spring. He could move quickly if he continues to have better command.