Former Olympic champion Greg Rutherford remains uncertain of his immediate future after an indifferent display at the Muller Indoor Grand Prix in Glasgow.

Rutherford continued his comeback from injury with a fourth-placed finish in the long jump after managing 7.89m with his second jump, but his participation at next week’s World Indoor Championships remains uncertain.

The 2012 Olympic champion suffered a nightmare 2017 after undergoing enforced ankle and groin surgery and only made his comeback last week, when he was granted a pass to the Worlds after winning at the British Indoor Championships.

His performance, though well off top spot – which went to Yuhao Shi – was an improvement on last week but he looked short of sharpness which leaves him doubting whether he is ready to compete in Birmingham next weekend.

“It doesn’t look good at the moment to be totally honest,” he said. “As I’ve always said, I’m not there to make up the numbers and I’m there to win medals.

“Jumping like that, maybe I might catch an 8m or so, but I don’t feel like that’s good enough and that’s insulting to the other long jumpers if I’m going in there claiming that I can go out there and win it.

“I have got to see how I pull up after this.

“I have got to be honest, after last week I still felt absolutely awful after trials. My body was really struggling and that’s just the workload.

“I hadn’t done six rounds of the long jump since the Olympic final, which is a long time so no wonder I was tired.”

Rutherford has already pulled out of the Commonwealth Games in order to give himself a longer period of time to get fit for the summer, which he feels is crucial after such a long time out.

“I’ve been through a period of a lot of success and then last year was really difficult with injury,” he said. “I don’t want to make my comeback just making up the numbers and turning up and waving to the crowd and going off again.

“I still want to win and to give myself the best opportunity to do that, I need to make up on training that I’ve lost and get ready for the summer.”

Eilidh Doyle ran a gutsy race to finish second in the women’s 400m final, with world champion Phyllis Francis cruising home in first.

Doyle recovered from a slow start to lead before a home crowd, but had to settle for second with a time of 52.38s to give her perfect preparation for next week.

“I’m really looking forward to the world indoors,” she said. “This gave me the perfect warm-up for that event; it’s all part of an exciting first half of the year for me.”

Jake Wightman, another who will represent Scotland at the Commonwealth Games, was the surprise in the men’s 800m where he finished third, while Dina Asher-Smith had a fine day, running superb times in the 60m throughout the day before finishing second to Marie Josee Ta Lou.