Cummins was playing with St Johnstone at the time as Van Dijk was set to move south to Southampton.
“He left the day after we played against them. That's my claim to fame, that's what pushed the Southampton deal over the line, that he marked me," Cummins laughed.
“We were told in the dressing room, stop him, rather than him stopping you. Get behind the ball when he gets it, because he'll run the pitch no bother.
“The first ball, I tried to sprint with him and he just boshed me out of it.
"I was out of breath and blowing out of backside and he just turned to me and said 'I wouldn't even bother, I'm just too good'."