Briton impresses with PB behind Hellen Obiri’s meeting record at Anniversary Games, while Allyson Felix and Kendra Harrison are among winners

Laura Muir further proved her fine form ahead of a planned IAAF World Championships double in London next month by improving her own Scottish mile record at the Müller Anniversary Games on Sunday.

Clocking 4:18.03 to better her previous best of 4:19.12 from Oslo last year, the 24-year-old finished as runner-up to Kenya’s Olympic 5000m silver medallist Hellen Obiri who surged ahead with a strong finish.

Muir had gone into the event with an eye on Zola Budd’s British mile record of 4:17.57 from 1985 and although she just missed it, the mark consolidates her place at No.2 on the UK all-time list.

The performance highlights how Muir remains on track, despite the stress fracture she sustained in her foot earlier this season.

“I am really happy,” said the Scot, who became the first British woman to run under two minutes for 800m, four minutes for 1500m, 8:30 for 3000m and 15 minutes for 5000m following her two-lap PB in Lausanne on Thursday. “I can’t complain with a PB.

“The Worlds are still a month down the road and I am encouraged after today,” added Muir, who hopes to contest both the 1500m and 5000m in London next month. “I know I can come back even fitter and faster.”

Obiri ran 4:16.56 to break the Kenyan and meeting record, while Muir’s fellow World Championships-bound Briton, Laura Weightman, clocked 4:20.88 for sixth.

Melissa Courtney was eighth with a PB of 4:23.15, while Steph Twell (4:25.39), Katie Snowden (4:25.89) and Jess Judd (4:28.59) all also ran lifetime bests.

USA’s six-time Olympic gold medallist Allyson Felix was another to make a statement as she works towards the defence of her world 400m title on the same track next month, dominating the one-lap event to clock a world-leading 49.65.

It was a US top three with Courtney Okolo second in 50.29 and world 400m hurdles silver medallist Shamier Little third in 50.40, while Britain’s Emily Diamond was seventh in a season’s best of 51.67.

Last year Kendra Harrison stormed to a world 100m hurdles record on the London track. With the World Championships her focus this summer, the American didn’t peak for another record run but she secured a win with 12.39, despite clattering the fifth hurdle and losing a bit of momentum.

Harrison’s closest challenger was London 2012 Olympic champion Sally Pearson as she clocked her quickest time since winning her Olympic title in the same stadium five years ago, running 12.48. It was a promising performance as the Australian continues her comeback after injury struggles.

Heptathlete Katarina Johnson-Thompson had earlier clocked 13.45 in the first 100m hurdles heat, which was won impressively by Harrison in 12.47. Pearson won the second heat in 12.71.

Double Olympic sprint champion Elaine Thompson is concentrating on the 100m this summer and the Jamaican stormed to victory over that distance in a World Champs warm-up, clocking 10.94 into a headwind of -1.4m/s from world 200m champion Dafne Schippers with 10.97. World Championships-bound Britons Asha Philip and Daryll Neita clocked 11.19 and 11.22 for sixth and seventh respectively.

Philip had earlier clocked a season’s best of 11.18 for third in her heat, while 20-year-old Neita ran a PB of 11.14 in her heat to move to equal seventh on the UK all-time list.

British 100m and 200m record-holder Dina Asher-Smith, who continues her return after injury, had been among those to exit after the first round as she clocked 11.51 for sixth in her heat, while Ashleigh Nelson pulled up in the same race.

“Obviously I would have liked to have gone a lot faster, and I would have liked to have put a better race together, but I’m happy to have come through it healthy and in a place where I believe can go quicker,” Asher-Smith explained. “I’m confident that with some more training and some more work in me that things will be on the up, so we’ll see from there.”

Two-time Olympic gold medallist Barbora Spotakova had an impressive response to Sara Kolak’s meeting record throws as she launched the javelin to 68.26m in the final round to beat the Rio Olympic champion who had a best of 67.83m from round three. Kolak also threw 66.79m in the second round.

USA’s Olympic champion Tianna Bartoletta soared out to meeting record 7.01m to secure long jump success ahead of Rio bronze medallist Ivana Spanovic, who retired from the competition after her 6.88m in the first round. After racing in the 100m hurdles heats, Johnson-Thompson jumped a season’s best 6.75m for fourth. British champion Lorraine Ugen was sixth with 6.59m.

Mariya Lasitskene continued to impress with a best clearance of 2.00m for victory in the high jump before two unsuccessful attempts at 2.08m. USA’s Vashti Cunningham was second with 1.97m, while British champion Morgan Lake had a best of 1.90m for seventh.

USA’s Charlene Lipsey won the 800m in 1:59.43 as British champion Shelayna Oskan-Clarke came through for second in 1:59.82. Lynsey Sharp, who had been to the fore alongside Lipsey until around 100m to go, finished fourth in 1:59.96. Continuing her fine form, British silver medallist Adelle Tracey clocked a PB of 2:00.34 for sixth.

Olympic champion Katerina Stefanidi secured victory in the pole vault with her clearance of 4.81m before three unsuccessful attempts at what would have been a Greek record height of 4.91m. Switzerland’s Nicole Büchler cleared 4.73m for second, while British record-holder Holly Bradshaw was sixth with a best of 4.55m.

Jamaica’s Janieve Russell won the 400m hurdles in a season’s best of 54.02 as Eilidh Doyle finished fourth in 54.82, two places ahead of Olympic champion Dalilah Muhammad in 54.99.

» A report on Mo Farah’s 3000m win can be found here, while coverage of other men’s events is here. See the July 13 edition of AW magazine for eight pages of reports, pictures and results from the Müller Anniversary Games