(Updates with details, quotes)
MUNICH, April 28 (Reuters) - Bayern Munich winger Arjen Robben's return from injury as a substitute against Borussia Dortmund lasted 16 minutes before he limped off with a calf problem in Tuesday's German Cup semi-final shootout defeat.
"He injured his calf muscle and will undergo further checks tomorrow," Bayern CEO Karl-Heinz Rummenigge told reporters.
It was unclear whether the Dutchman would be fit for the Champions League semi-final at Barcelona next week.
Robben, out since March 23 when he tore an abdominal muscle on his comeback from yet another injury, came on in the 68th minute to much applause from the Bayern fans.