Preliminary tests indicate a positive prognosis for injured Atlanta Braves right fielder Ronald Acuña Jr. Atlanta Braves right fielder Ronald Acuña Jr. left Tuesday's game against the Kansas CIty Royals and is already on the injured list. But he appears to have avoided a serious injury.

Ronald Acuña Jr. has been sidelined with Achilles tendon tightness, raising concerns about a potential serious injury. Know what Achilles tightness means, its risks, recovery process, and why even minor symptoms should never be ignored by athletes or amateurs.

The Atlanta Braves put five-time All-Star Ronald Acuña Jr. on the 10-day injured list with right Achilles tendon inflammation Wednesday, though the exact severity of the injury to the slugging outfielder may not be known until additional testing is done.