Daytona outfielder Jorge Soler, the Cubs' No. 3 prospect, has been diagnosed with a stress fracture in his left tibia, MLB.com's Carrie Muskat is reporting.
The Cuban-born slugger is expected to be in a walking boot for four to six weeks. He will miss the All-Star Futures Game in New York on July 14 after being named to the World Team roster Wednesday. It is uncertain whether he will return before the end of the Minor League season.
Soler suffered the injury by fouling a ball off his shin, though it is unclear exactly when this happened. He last played for Daytona on June 13, going 1-for-4 in the Cubs' 5-1 win over Fort Myers.
Soler started the Florida State League All-Star Game in right field for the North Division on June 15 but was replaced after one inning without coming to the plate. He traveled to Chicago to be examined by Cubs doctors Wednesday.
Signed by the Cubs to a nine-year Major League contract on June 30, 2012, the 21-year-old Soler was suspended five games and fined an undisclosed amount by the Florida State League for brandishing a bat in an altercation during a game against Clearwater on April 10.
In 55 games with Class A Advanced Daytona, Soler has hit .281/.343/.467 with eight homers, 35 RBIs and five stolen bases in six attempts. Rated MLB.com's No. 39 prospect, he has the good speed, great arm and substantial raw power of a prototypical right fielder, according to MLB.com's Jonathan Mayo.