Accomplish the indicated achievement to get the corresponding number of 
Gamerscore points:

  Control Artist (5 points): Throw a Total Control Pitch with superb execution. 
  Frozen Rope (5 points): Get a line drive base hit using Right Stick Hitting 
  (Pro difficulty or higher). 
  Advanced Mind, Advanced Pleasure (50 points): Complete 10 games using advanced 
  controls. 
  Fantasy Cards (10 points): Create a complete card team. 
  Buy a Pack (20 points): Use your duplicate cards to buy a new pack of cards. 
  Earn a Team (30 points): Unlock all the cards for a team in card series 1. 
  Earn 100 Cards (50 points): Unlock 100 different types of cards. 
  Quality Start (5 points): Have your starting pitcher give up 3 or fewer runs 
  in 6+ innings of work (Pro difficulty or higher). 
  Hold! (5 points): Get credit for a hold (Pro difficulty or higher). 
  Save! (5 points): Get credit for a save (min 3 batters faced, Pro difficulty 
  or higher). 
  Keep it Down (5 points): Complete a 9-inning game without giving up a home run 
  (Pro difficulty or higher). 
  1-2-3 (10 points): Retire all 3 batters faced in an inning (Pro difficulty or 
  higher). 
  Strikeout the Side (50 points): Strikeout all 3 batters faced in an inning 
  (Pro difficulty or higher). 
  A Day To Remember (100 points): Throw a no-hitter using any number of pitchers 
  (minimum 9 innings, Pro difficulty or higher). 
  Skillz (5 points): Make a spectacular defensive play (Pro difficulty or 
  higher). 
  Catch 'em Nappin (10 points): Successfully bunt for a hit (Pro difficulty or 
  higher). 
  Red-Handed (10 points): Throw out a runner attempting to steal a base (Pro 
  difficulty or higher). 
  He's Got a Gun! (20 points): Throw out a runner at homeplate from the outfield 
  using Right Stick Throwing. 
  The Train's Comin' Through (20 points): Score a run after plowing over the 
  catcher at homeplate (Pro difficulty or higher). 
  De-Railed (20 points): Successfully prevent a runner from plowing over your 
  catcher and scoring (Pro difficulty or higher). 
  Triple Double (20 points): Turn 3 double plays in one game (Pro difficulty or 
  higher). 
  Eagle Eye (10 points): Get a Base on Balls (Pro difficulty or higher). 
  Double Triple (30 points): Hit two triples in one game (Pro difficulty or 
  higher). 
  Goliath (20 points): Hit 5 home runs in one game (Pro difficulty or higher). 
  Legendary (50 points): Win a 9-inning game on Legend difficulty. 
  What's Your Fantasy? (5 points): Complete at least 25 rounds of a fantasy 
  draft in franchise mode. 
  Glove of Gold (10 points): In franchise, have a player win the Player's Choice 
  Best Fielder award (min 20 games played). 
  Platinum Bat (10 points): In franchise, have a player win the Player's Choice 
  Best Hitting award (min. 20 games played). 
  Star-Studded (20 points): In franchise, have 3 or more players make the 
  All-Star Team (min 15 games played). 
  Makin' a Splash (20 points): In franchise, have a rookie earn the Rookie of 
  the Year award (min 20 games played). 
  Contender (20 points): In franchise, have your team make the playoffs (min 20 
  games played). 
  Domination (30 points): Win at least 105 games in one season (min 20 games 
  played) 
  Layer Cake (10 points): In franchise, win a game at each minor league level 
  (A, AA, and AAA). 
  The Brink of Stardom (10 points): In franchise, have a player win the Minor 
  League Player of the Year award. 
  I'm a Winner! (10 points): Win a ranked match on Xbox Live. 
  Win 20 Online (30 points): Win 20 ranked matches on Xbox Live. 
  Card Master (50 points): Win a Card Battle match on Xbox Live. 
  Slugger (20 points): Win a Strikes Only match on Xbox Live. 
  League Participation (10 points): Play a game in a league or tournament on 
  Xbox Live. 
  Cards Shmards (20 points): Top 'em: In a ranked match on Xbox Live, beat an 
  opponent who has unlocked 'Earn 100 Cards'. 
  David vs. Goliath (20 points): Top 'em: In a ranked match on Xbox Live, beat 
  an opponent who has unlocked 'Goliath'. 
  Another Level (20 points): Top 'em: In a ranked match on Xbox Live, beat an 
  opponent who has unlocked 'Legendary'. 
  Live Wire (20 points): Top 'em: In a ranked match on Xbox Live, beat an 
  opponent who has unlocked 'Win 20 Online'. 
  You're Not So Tough (50 points): Top 'em: In a ranked match on Xbox Live, beat 
  an opponent who has unlocked 'A Day to Remember'. 
  What Makes YOU So Special? (50 points): Top 'em: In a ranked match on Xbox 
  Live, beat an opponent who has unlocked a Top 'em achievement.