"Any time I stretched my arm, I could feel a little pinch," Wong said. "I thought if I kept playing through it, eventually it would go away. But it's been a couple weeks now and it hasn't gone away. We thought we would take care of it now before it gets any worse."
Wong did not have an MRI on his shoulder after initially injuring it, so this follow-up exam should provide clarification on the specifics of the injury and what treatment plan should be followed. Wong won't be eligible to come off the DL until at least July 6. The Cardinals do not anticipate receiving a serious diagnosis.
"I'm watching some of the movements, and I'm watching some of the things he's doing," manager Mike Matheny said. "He looks close, but he looks a hair off."
The layoff is just another setback for Wong, who has faced several this year. He struggled to assert himself as the Cardinals' starting second baseman upon being awarded the job out of Spring Training, and that led to the club sending him back to Triple-A to regain his swing and confidence.
He crushed Triple-A pitching and carried that momentum over upon being recalled in mid-May. In the 15 games he played before injuring his shoulder, Wong was 18-for-57 with eight runs scored and 10 RBIs.
"Coming back after being sent down and doing what I did injuring my arm the same day I hit the grand slam, it did [stink]," Wong said. "You want to continue to progress and get better. It's not fun."
Jenifer Langosch is a reporter for MLB.com. Read her blog, By Gosh, It's Langosch, and follow her on Twitter @LangoschMLB. This story was not subject to the approval of Major League Baseball or its clubs.