Palmer, 21, jumped superbly to register 6.67m (wind assisted +2.4m) as Sawyers recorded 6.53m in her first competition since rupturing an achilles last year.
Wales international Abigail Pawlett finished third in a personal best 6.17m (wind assisted 1.7m).
“Getting back out competing feels so fun, it’s so great,” Sawyers told Loughborough Sport.
“It’s nice to feel like me still. The aim of today was to get back competing but also to hit the 6.5m marker. I felt like I had 6.6m in the tank but it wasn’t to be.
“If I were to ignore the fact I’ve been out for eighteen months, that was a solid performance. Hat’s off to Molly…that was unbelievable.”
Elsewhere, on another day of first-class athletics on campus, the capacity crowd were treated to yet more sporting drama that is now synonymous with LIA.
In the Women’s 100m Hurdles, Dani Hales pipped world champion Katarina Johnson-Thompson to win in 13.51 seconds. Johnson-Thompson clocked 13.57 in her first outdoor competition since winning heptathlon silver in Paris last summer.
Later in the day, Loughborough alumna Bekah Walton dominated the Women’s Javelin to win with a distance of 59.38m.
Jamaica international and three-time World Indoor medallist Kimberly Williams also claimed top spot in the Women’s Triple Jump with a score of 13.32m.
Representing Wales, Olivia Breen showed fine form to win the Women’s Para Long Jump by recording 4.84m. The double Paralympic Games medallist surpassed GB Junior Maddie Down’s 4.62m and England’s Molly Kingsbury 3.98m.
Olivia Breen wins the Women's Para Long Jump. Image provided by Neil Duggan.
New Zealander Imogen Ayris, who won Commonwealth bronze in Birmingham, topped the Women’s Pole Vault with a height of 4.45m.
Back on the track, Thomas Young – another Loughborough sport scholar – romped home in the Men’s Para 100m in 11.19 seconds.
Tom Young storms to victory. Image provided by Still Sport Photography.
For the full breakdown of the day’s results, visit Roster:
https://meets.rosterathletics.com/public/competitions/details/about?id=26459