Klay Thompson's younger brother Trayce hasn't played for the Dodgers since July 10.
On July 16, Trayce was placed on the 15-day disabled list with lower back irritation.
The Dodgers' outfielder was transferred to the 60-day disabled list on Sunday, making him ineligible to return until September 9.
Now the severity of his injury is known.
Speaking with the Los Angeles Times on Monday, Thompson said an X-ray revealed two fractures in his back. According to Dodgers beat writer Andy McCollough, Thompson hopes to play in September.
When Thompson went on the DL in July, manager Dave Roberts said that the 25-year-old had been dealing with back issues since June, but aggravated the injury on a swing on July 10.
In 80 games with the Dodgers this season, Thompson is hitting .225/.302/.436 with 11 doubles, 13 home runs and 32 RBI.
The Dodgers acquired Thompson in December as part of a three-team trade with the Reds and White Sox.
An X-ray discovered two fractures in Trayce Thompson's back, he said. Thompson still thinks it's realistic he can play in September.— Andy McCullough (@McCulloughTimes) August 8, 2016