"It's really disappointing."
The prime reason was not so much that Wozniak, ranked eight places lower, is a player she's previously beaten, and on grass. More relevant was the venue and occasion.
"This only happens every four years and will never happen at Wimbledon again."
Wozniak plays at a fast pace and can be tough to stop if she gets on a roll, the 24-year-old Erakovic added.
"I tried to throw in a few junk balls, and slices but it just didn't work. I tried to take my time but it went really fast. I came out against a player who was ripping some great shots and I just wasn't up to par today."
Erakovic plans to head home shortly. She hasn't been home since mid-April.
But, form permitting, this won't be her last Olympics. She loves the experience, believes it will become almost akin to a grand slam in time and wants to be back.
"This is a very special event and everyone is really keen to play it."