Choi also ranked second in both on-base percentage (.459) and slugging (.541), collecting 17 doubles, a homer and 23 RBIs in 39 games before he was promoted to Class A Advanced High Desert.
While Choi was the only Mariner on the Postseason All-Star Team, the Royals and Rangers each placed three players on the 13-man squad.
Royals right-hander Robinson Yambati, who led the league with eight wins and ranked sixth with a 2.71 ERA, is joined by league saves leader Tyler Gatrell (1-0, 1.29 ERA, 12 saves) and first baseman Henry Moreno (.327, four homers, 32 RBIs).
The Rangers' representatives are third baseman Christian Villanueva (.314, 2, 35), shortstop Odubel Herrera (.337, 0, 31) and outfielder Teodoro Martinez (.313, 1, 22, 20 stolen bases.
Second baseman Nick Shaw, the Brewers' 25th-round pick in the 2010 Draft, fills out the infield after batting .339 with a league-leading .478 on-base percentage, 19 RBIs and 14 steals in 48 games.
The Brewers' other All-Star is left-hander Charly Bashara (5-2, 2.37), while Tony Diggs was named Manager of the Year after guiding the club to a 34-22 record and a first-place finish in the Central Division.
Robert Maddox (.283, 7, 46), Cincinnati's 18th-round pick in June, is the designated hitter. Reds teammate Kurtis Muller (.317, 0, 22) and Royce Consigli (.340, 1, 31) of the Athletics are the other All-Star outfielders.
A's left-hander Omar Duran is the fourth member of the pitching staff after going 2-1 with a 2.01 ERA in 14 games, including two starts.
|2010 Arizona League Postseason All-Star Team|
Most Valuable Player: Ji-Man Choi, Mariners
Manager of the Year: Tony Diggs, Brewers