An emotional Zoe Hobbs says she is disappointed in her 100m semi-final performance, knowing she had more to give.
The New Zealand record-holder ran 11.13s on Sunday morning (NZ time), coming in sixth, and failing to qualify for the final.
"It was tough. It was bittersweet knowing that I had more in there," she told RNZ.
"Yesterday was faster and felt a lot easier than tonight. I felt free and relaxed yesterday and felt like I had an edge more to give today.
"I just didn't execute a good race. I think I let it go from the get-go. My reaction wasn't great and over the first 10 I was already behind, and I let it slip through my fingers, and that's just the reality of the 100m sometimes.
"You have to put together a perfect race, especially to make an Olympics. I'm really disappointed."
Hobbs would have been the first Kiwi to make a 100m final in a century had she been just a tiny bit quicker.
"Everything felt good [ahead of the race]. I was physically good. Mentally good. I just didn't execute the race I needed to."
It was not immediately apparent she had fallen short, Hobbs said.
"I didn't know where I'd placed. Everything was a bit of a blur. It was when the time came up I found out where I was. It was just instant disappointment."
In her heat, she ran 11.08s.
"And seeing the time as well, that it was slower than yesterday. I think if it was a good time, I could have accepted not making the final… It's just disappointing."
It was not a good morning for Kiwi athletes, with shot putters Jacko Gill and Tom Walsh also struggling in the wet conditions. Walsh failed to make a legal throw, while Gill had to settle for seventh.