Andy Murray's tennis coach mother is at Holyrood to discuss her views on sport in the community.
Judy Murray, who is also captain of the British Fed Cup team, will be appearing as part of a panel of witnesses at the Health and Sport Committee.
The committee is currently conducting an inquiry into support for community sport, looking at the contribution of volunteers, the benefits of local sports clubs and the availability, accessibility and affordability of facilities.
Ms Murray recently urged the Scottish Government to look at plans for a tennis academy to nurture young talent and to consider improvements to facilities for the sport across Scotland.
Former long-distance runner and Olympic medalist Liz McColgan will also be appearing at the committee.
Ms McColgan, who won 10,000m silver at the 1988 Olympics and is now an athletics coach, last month warned that a generation of aspiring athletes will see no benefit from any legacy from the London Games.
Speaking at the Festival of Politics, she said: "I still coach kids who are paying £3 to get into a track that has very bad lighting. I can't see them in the winter time. There's only one toilet. There's no drinks available.
"It's quite sad that we've had so much success at the Olympics, and we've got 112 kids who all want to be like Mo Farah, and I can see that the cycle track that's just 100m along across the park is exactly the same, the swimming clubs are exactly the same."
Scottish Disability Sport chief executive Gavin McLeod and John Lee, policy officer for Volunteer Development Scotland, are among other witnesses set to appear.