Leicester Tigers came from behind to defeat Ospreys by six points, 17-23, in Round 1 of the 2022/23 Heineken Champions Cup pool stages.
Trailing by four points at half-time, 10-6, a young Tigers outfit - with an average age of just 26 across the matchday squad - scored 17 points in the second half to kick off the new European season with an away win over an experienced Ospreys outfit.
Leicester's victory was only the second for the club in five visits to Swansea.com Stadium and included a senior club debut for Gabriel Oghre, as well as first Champions Cup outings in Tigers colours for Charlie Atkinson, Olly Cracknell, Anthony Watson and Sean Jansen.
Ospreys were the first to score when Jack Walsh landed his first penalty-goal attempt in the 10th minute before Atkinson levelled things up at 3-all just five minutes later.
The Leicester fly-half took Tigers into the lead only six minutes later with a second penalty-goal.
Repeated scrum infringements from the visitors saw Joe Heyes shown a yellow card just before the half-time break and Ospreys capitalised on the extra man, crossing for the game's first try in the final play of the half.
Walsh converted the score to see his side lead by four heading back into the changing rooms.
The young Tigers came out firing in the second half and, approaching the 50th minute, Atkinson kicked cross-field for Harry Potter who took the ball on the bounce and dived over for Leicester's first and to take back the lead - which the fly-half extended to three with a sideline conversion.
In what was an arm-wrestle of a match for almost an hour, Tigers full-back Watson went against the trend in the 57th minute when he stepped his way through a chasing Ospreys defensive line and danced his way around and over the last line of Welshman to score under the posts.
Atkinson's conversion from in front saw the visitors out to a ten-point lead, which Ospreys cut back to three with as many minutes remaining, before the Heineken Star of the Match winner pushed back out to six with his third of the match to secure the 17-23 win.