f(x)'s Sulli and soccer player Park Ji Sung were spotted filming for SBS' 'Running Man'.

The two international stars are confirmed to have been a part of the June 19th recording of the insanely popular variety show. Considering that Park Ji Sung was just photographed on a date with announcer Kim Ji Min on the 18th, it's likely that the 'Running Man' cast will be poking fun.

The soccer star is also known to be good friends with Kim Jong Kook, who he met on the show.

Check out photos from the filming below!