“He’s here?”.

Seebohm has another chance to secure her spot at a fifth Olympics later in the week when she competes in the 200m backstroke.

“I’m older and that speed isn’t as quick as what it used to be,” Seebohm said after her heat swim.

“For Emily Seebohm to finish seventh in the final of an Olympic trial eight months after having a baby is amazing,” John Dean said.

Journalist and mother Jen Browning added: “I’m currently sitting on the couch eating chocolate nine months post-birth.

She’s amazing.

”McKeown came within eight-hundredths of a second of her world record to post the second-fastest time in history, but was still disappointed.

The reigning Olympic 100m and 200m backstroke champion is adding the 200m individual medley to her program at next month’s Paris Games.

McKeown on Monday night set a Commonwealth record in the medley, a feat that may have denied her a fresh backstroke benchmark.

“If you’re going to get up and do a 200m medley at max effort, you’re not going to come in the next day being refreshed—no matter what you do,” she said.

“The Olympics is just like that.

If all goes to plan I will have nine individual events plus relays, so I have got to put myself in harm’s way here.

”Freestyle ace O’Callaghan finished second in 57.

88 to secure a spot in what she described as her “fun event”.

“I don’t know yet.

It really depends on if I qualify for the next few freestyle events, that’s the main thing,” the 200m freestyle world record holder said.

“The 100m backstroke for me is a fun event, I don’t really train for it, so to go out there and do a 57 is just amazing.

”Triple Olympian Mitch Larkin finished fourth in the men’s 100m backstroke final, missing his first chance at creating history by becoming the first Australian man selected for four Games.

Isaac Cooper won in 53.

46 ahead of Bradley Woodward (53.

53), Enoch Robb (54.

14) and Larkin (54.

22), who has a 200m backstroke to come on Friday.

All four were outside of the automatic Olympic qualifying time set by Swimming Australia, with selection now at the discretion of the hierarchy.

In the women’s 100m breaststroke final, Jenna Strauch (1:06.

90) pipped Ella Ramsay (1:06.

94).