He was back at the Vitality Stadium 88 days on to meet the medics who helped save his life and be presented to the crowd before kick-off.
The visiting fans were delighted to see their team, third from bottom in the Premier League, take a 3-0 half-time lead courtesy of goals from Tahith Chong, Chiedozie Ogbene and Ross Barkley.
But a short, sharp half-time team talk by Bournemouth manager Andoni Iraola seemed to do the trick with the hosts scoring three times inside 14 second-half minutes to set up a tense final half hour at the Vitality Stadium.
And a remarkable match took another twist late on when Semenyo blasted home on 83 minutes to put his side in front for the first time in the match.
Luton searched for an equaliser but Bournemouth held on for their first home league win of 2024.
More to follow