Spotted or Juvenile Pied?

Hi all,

I was watching what I was pretty sure were spotted flycatchers in the woods when I noticed this one had some strong white markings coming through on the back and wondered if it was maybe  a young Pied flycatcher? 

First pic the bird in question, the second what I am pretty sure were Spotties (confirmation would be lovely) :)

Thanks in advance for any help.