Looking on the internet deeply has found these results:

deleted in the first run is the most popular phrase on the web.

deleted at the first run 10 results on the web	deleted in the first run 13 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	... the add fails, but the delete is successful, in the second attempt the add is also successful, because the conflicting feature was already deleted in the first run. Feb 16, 2009 ... However, not all detected entries could be deleted in the first run and even further scan and clean operations were futile against the nasty�... (0, 0, 1), we know that one bit is deleted in the first run (first three bits) of Xn, but do not know which bit is deleted. The true identity of the deleted bit is nature's�...

deleted at the first run

10 results on the web

deleted in the first run

13 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

... the add fails, but the delete is successful, in the second attempt the add is also successful, because the conflicting feature was already deleted in the first run.
Feb 16, 2009 ... However, not all detected entries could be deleted in the first run and even further scan and clean operations were futile against the nasty�...
(0, 0, 1), we know that one bit is deleted in the first run (first three bits) of Xn, but do not know which bit is deleted. The true identity of the deleted bit is nature's�...