Complete each of the following achievements below to get the allotted gamerscore.

Unlockables

10 Co-Op Doubles Ranked Wins (20) Win 10 co-op doubles Ranked Matches on Xbox Live.
100 Artificial Court game (20) 100 artificial court plays.
100 Clay Court Games (20) 100 clay court plays.
100 Grass Court Games (20) 100 grass court plays.
1000 Plays (30) Play the game 1000 times in any mode.
10Km Running Distance (30) Run a total of 10Km.
130mph / 209kmh serve (20) Hit a serve over 130 mph.
1st Custom Player Win (20) Win a match with an Custom Player on default settings.
1st Xbox Live Play (10) Play any game mode on Xbox Live.
25 Conversations (10) Make friends and chat to 25 pro players in the World Tour.
25 Court Games Played (20) Play and complete 25 Court Games.
25 Love Games (30) Achieve 25 Love Games.
250 Drop Shot Points (20) 250 drop shot points won.
250 Lob Points (20) 250 lob points won.
250 Running Shot Points (20) 250 running shot points won.
40 Consecutive Rallies (20) Achieve 40 Consecutive Rallies.
5 Consecutive MAX Served (20) Achieve 5 Consecutive MAX Serves.
5 Consecutive Ranked Wins (30) Win 5 Ranked Matches in a row on Xbox Live.
50 Player lobbies visited (20) Visit 50 Player Match lobbies on Xbox Live.
50 Ranked Wins (20) Win 50 Ranked Matches on Xbox Live.
500 MAX Serves (20) Achieve 500 Max Serves.
500 Smash Points (20) 500 smash points won.
500 Stroke Points (20) 500 stroke points won.
500 Volley Points (20) 500 volley points won.

Academy Missions Cleared (10) Clear each type of academy training session in the World Tour.
All Stages Unlocked (30) Unlock every stage in the game.

Beat All Female Pro Players (20) Beat all Female Pro Players on default settings.
Beat All Male Pro Players (20) Beat all Male Pro Players on default settings.

Custom Player - 1st Ranked Win (10) Win a Ranked Match using an Custom Player on Xbox Live.
Custom Player Created (10) Create your own Custom Player.

Gold in all Academy (30) Clear all the academy mission with gold medals.

Ham and Eggs (20) Get a Turkey in Pin Crusher in World Tour on level 4 or above.

Level 6 Training Game Cleared (30) Clear a level 6 mini-game in the World Tour.
Looking Good (20) Unlock 1 of each type of gear.

Play 10 hours court time (30) Play for 10 hours on tennis courts.

R&R (10) Take a well deserved rest in the World Tour.
Rank #1 World Tour (30) Rank #1 in the World Tour.
Rank #100 World Tour (20) Rank #100 in the World Tour.
Rank #200 World Tour (10) Rank #200 in the World Tour.

Training Games Cleared (10) Clear each type of mini-game in the World Tour.

Unlocked Duke (30) Unlock secret player Duke.
Unlocked King (30) Unlock secret player King.

VT.TV Viewers (10) Watch a match on VT.TV.

Won Ranked Match Player Rank +25 (20) Beat a singles rival ranked 25 positions above you.
Won Ranked Team Rank +25 (20) Beat a doubles team ranked 25 positions above you.
Won Using All Female Pro Players (20) Win a match with all Female Pro Players on default settings.
Won Using All Male Pro Players (20) Win a match with all Male Pro Players on default settings.
World Tour Match (10) Win your first match in the World Tour.
World Tour Season (20) Complete Year 1 in the World Tour.
World Tour Tournament (10) Win your first tournament in the World Tour.

Duke and King - To unlock Duke and King enter Tournament mode and choose singles matches. Beat the tournament without the computer winning a game.(not point ) Depending on your Ranking you will be challenged by either Duke or King. Total of D or worse gets you King, total of C or better gets your Duke. Beat the challenger to unlock that player. For an easier time change settings to "very easy" and 1 game sets. Duke and King are hard so get good with cross court and slam shots.

Duke Beat in tournament mode after flawless C ranking or better.
King Beat in tournament mode after flawless D ranking or worse.

Unlock the Frying Pan as a racket - Simply select the Pin Crusher mini game on your world tour, and get 3 strikes in a row to unlock the Frying Pan to use as a racket.

Frying Pan Racket Select the Pin Crusher minigame & get 3 strikes in a row.