Here is the full list of all 26 MLB The Show 21 trophies - there are 9 bronze, 10 silver, 6 gold and 1 platinum.
Advance a runner into scoring position or score a run with a sac bunt (any mode - offline or online). (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
In Road to the Show, get the call to the Triple-A level.
Win a game on any walk-off. (3 inning min - any mode - offline or online. This trophy is not awarded if completed in a local multiplayer game, practice mode, by simulating/fast forwarding, or by switching teams.)
Win a HOME RUN DERBY® (any mode - offline or online).
Hit 100 home runs throughout any combination of modes (any mode - offline or online). (Awarded with normal game-play and accumulation of home runs.)
Equip any bat-skin onto your Road to the Show player or Diamond Dynasty team. (Awarded in RttS edit player or DD edit team equipment.)
Hit 50 home runs throughout any combination of modes (offline or online). (Awarded with normal game-play and accumulation of home runs.)
In Road to the Show, get drafted by an MLB® team.
Draw a walk with the first batter of an inning (offline or online). (This trophy is not awarded if completed in a local multiplayer game, franchise mode, MTO, practice mode, using a save file, or by switching teams.)
As a pitcher, break a hitter's bat. (any mode - offline or online). (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
Hit 25 home runs throughout any combination of modes (offline or online). (Awarded with normal game-play and accumulation of home runs.)
Win a 9-inning game only allowing three hits or less. (any mode - offline or online). (This trophy is not awarded if completed in a local multiplayer game, practice mode, by switching teams, by simulating, and excludes DD moments)
Collect four hits or more within a game with a single player (any mode - offline or online). (This trophy is not awarded if completed in a local multiplayer game, practice mode, by simulating/fast forwarding, or by switching teams.)
During any plate appearance, see ten or more pitches (any mode - offline or online). (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
Hit a 425+ foot home run in any stadium (any mode - offline or online). (Awarded after hitting a home run that travels 425+ feet from home plate.)
Strike out six batters or more within the first 3 innings (any mode - offline or online). (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
After falling behind in the count 0-2, work back to a full 3-2 count. (any mode - offline or online). (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
Open your first player card pack. (Awarded through the front end inventory menu, opening any card pack.)
Earn all of The Show™ 21 Trophies.
In Road To The Show, get called up to the MLB® Level.
Win a WORLD SERIES® in March to October. (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
Successfully pick-off a runner on any base (any mode - offline or online). (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
Win a Division Series in March to October to advance. (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
With Pinpoint pitching, strike out three batters within an inning (any mode - offline or online) (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
Record eight or more team walks within a game (any mode - offline or online). (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
In March to October, fast-track a prospect by earning a player boost in a minor league player-lock episode. (Awarded after successfully completing a fast track player lock in MTO)