"Gate OPS"

Looking at this Delta flight
Origin says “Gate E36 / Hartsfield-Jackson Intl” which is self-explanatory and fine…
Destination says “Gate OPS / San Diego Intl” which has me a little befuddled, since Delta’s 757/767 gates I believe are 39-41 (Terminal 2). Just wondered what the “OPS” is all about.

From what I understand, that particular airline may use a different gate at the airport each time as well as being dependant on gate availablity.