An Achilles issue has forced Laura Muir to abort a bold 800m/1500m double at the European Championships next month.
Muir had been bullish about launching a two-pronged bid for gold in Berlin when speaking after her failed effort to break the British mile record at the Anniversary Games on Sunday.
However, the effects of that grueling race were only felt a day later when she withdrew from 800m selection due to “irritation to her Achilles”.
“She’s a massively competitive athlete, but the simple fact is she has got some Achilles irritation and she’s made the sensible decision to focus on the 1500m.
“It is disappointing, but I love the fact that she makes good decisions and I’m sure therefore that we’ll see her at her best running the 1500m in Berlin.”
Muir’s last-minute decision to drop out on the eve of the team announcement comes after British Athletics was accused of favouritism when her rivals only learnt she had been added to the 800m start list at the British trials hours before the heats.
One rival lodged an official protest, but Muir was cleared to race in the shorter event – while skipping the 1500m – and ran out a clear winner.
Despite the latest backtrack only adding to a repeated theme of uncertainty over Muir’s plans, Black said he did not expect any major criticism from other athletes.
“The decision is the decision,” said Black. “I’m not anticipating any significant backlash. People always have a view.
“What’s important is Laura running well and winning medals, both now and in the future.”
Muir is one of 102 athletes named in the biggest British team to compete at a major championship for more than a century.
Diamond League champion Chijindu Ujah has been given the third selectors’ pick for the 100m alongside Reece Prescod and Zharnel Hughes.
World No 1 long jumper Lorraine Ugen is named in the team, alongside European leader Dina Asher-Smith, who will compete in the 100m, 200m and 4x100m relay.
“I think that the time has come for Dina to really demonstrate where she is at,” said Black.
“Her expectation is very, very high and it’s going to be exciting to see her hopefully winning medals at a championship and using it as a platform to go on and really raise her game even further into the future.
“To be able to produce your best performances three times in a championship over three events is a huge ask. But I know she’s amazingly determined.
“She’s gradually put herself up there in global terms with the best in the world. If it’s possible, she’ll do it. We certainly have high expectations.”