Let's say Peter got a 90 out of 100 on some exam and no one else did better.<br/><br/>"Peter was the only one <span style="color:#ff0000;"><b>to</b></span> have scored 90."<br/><br/>"Peter was the only one who have scored 90."<br/><br/>"There was no one else <b><span style="color:#ff0000;">to</span></b> have scored 90."<br/><br/>"There was no one else who have scored 90."<br/><br/>How correct (or incorrect) are the sentences with "to"?