[CQ-Contest] Station not giving a check or section

[I H]

During SS phone last weekend I heard a KP4 sending only his serial number and precedent. He didn't give a check or section. Will it be counted as a valid qso? If it isn't, I wonder how many will miss the sweep because of it.

There were a lot of guys needing the PR section when he showed up on 20M late Sunday afternoon, so the pile up was pretty big. I chose not to try and work the guy and took a chance on finding another one later in the contest. I got lucky and worked PR with less than a half hour left Sunday evening for the sweep.

So what do you guys think, should it be counted or not?

Ian - K8MM