open (up) daylight v. phr. especially in horse racing, to out-distance a competitor. (source: Double-Tongued Dictionary)
Further reading
A librarian opens a book and finds a mysterious invitation scribbled on the back of a business card. Another discovers a child’s letter to the Tooth Fairy, tucked into a book decades ago. What stories are left untold by these forgotten...
Visiting firemen doesn’t necessarily refer to firefighters. The terms visiting fireman and visiting firemen may refer to any of several types of visitors from out of town, including non-firefighting celebrities, tourists, and rowdy conventioneers...