The phrase "almost certainly open" is correct and usable in written English.
It can be used to express a high degree of confidence that something is open, though not with absolute certainty.
Example: "The store is almost certainly open, given that it's a Saturday afternoon."
Alternatives: "likely open" or "probably open".
Looking ahead, though, separation would almost certainly open up new opportunities for the island.
Delaware (30-3) is a host in the first and second rounds of the N.C.A.A. tournament and will almost certainly open at home next Sunday.
By contrast, Democrats, if they get a damning report from Mueller and win the House, will almost certainly open hearings at least to determine if impeachment is appropriate.
Delgado, 24, is out of options and cannot be sent to the minors without being passed through waivers, so he will almost certainly open the year with the Yankees.
The resulting changes will almost certainly open up the primary system to a greater number of voters, as more big and small states have a real say in the process.
The Yankees will almost certainly open the regular season in two weeks with two players essentially learning how to play their positions: Knoblauch's only previous experience in the outfield came in a handful of college games and one appearance in the majors, and Soriano played second for about a month in the minors last summer.
President Hollande's exit has almost certainly opened the field for his own prime minister, Manuel Valls, to launch his bid.
Governor, the restaurant near the Brooklyn waterfront that I awarded two stars about seven weeks before it was severely damaged by Hurricane Sandy, will almost certainly never open again.
Richard Dieter, the director of the Death Penalty Information Center, said that were Castro put on death row for "aggravated murder" of a fetus, the verdict would almost certainly be open to constitutional challenge.
"A sample of bone (skin/hair/tissue) from a known individual related to the princes would be required, and that almost certainly means opening a second tomb in the Abbey or elsewhere.
If players win the appeal and the injunction is upheld, the N.F.L. will almost certainly have to open its doors for business.
