Glamorgan’s hopes of qualifying for the One-Day Cup knockouts were dealt a heavy blow as they slumped to a 90-run defeat away at Hampshire, with teenage seamer Manny Lumsden the chief destroyer.

The 17-year-old, fresh from a stint in the Hundred, claimed the best figures of his fledgling career with 4 for 60, forming a formidable pace attack alongside 20-year-old Eddie Jack and the vastly experienced Kyle Abbott as Hampshire bowled Glamorgan out for 173 in reply to their 263.

Abbott set the tone with the ball, ripping through the top order to leave the Welsh side reeling at 30 for 3, taking three wickets inside a span of just nine overs.

Eddie Byrom and Harry Wallace were both undone by deliveries angled at off stump, either side of Zain-ul-Hassan skying an attempted flick straight into the hands of a leg-side fielder.

With Lumsden and Jack both released back from their Hundred sides – Southern Brave and MI London respectively – Hampshire had real firepower to call upon, and it was Jack who struck the decisive blow, removing South African overseas man Colin Ingram and Alex Horton in the same over.

Dan Douthwaite and Callum Nicholls did offer some resistance, putting on 51 together to give Glamorgan a glimmer of hope, but Ashutosh Sharma found the edge of Douthwaite’s bat, sending a catch to long-on for his 14th wicket of the competition.

From there, Lumsden mopped up the tail, bowling both Nicholls and Romano Franco before Andy Gorvin skied a catch straight to Sharma to complete the win.

Glamorgan’s top-scorer on the day was Rhys Nicholls with 40, but it was too little too late after Hampshire had posted a competitive total earlier in the day.

Batting first on a slow, used surface, Hampshire’s innings never really got going, with the hosts losing wickets whenever they tried to accelerate.

Openers Ali Orr and Nick Gubbins were both back in the pavilion inside the first seven overs, before Toby Albert and Jake Lehmann steadied the innings with a 78-run stand, a repeat of the pair’s productive partnership in Hampshire’s previous defeat to Durham, when they’d added 126 together.

Albert fell agonisingly short of a second successive half-century, dismissed stumped four runs shy of the milestone, but Lehmann kept the innings ticking over, adding a further 70 with Ben Brown.

The Australian-born Lehmann, who plays with a British passport, has been a picture of consistency for Hampshire across formats this season, racking up nine fifties, a century and 952 runs in total, and his measured 68 here was another example of his reliability.

Brown also brought up his own half-century, finishing with 54, but once again Hampshire were unable to kick on in the closing overs, losing wickets steadily rather than building another significant stand.

Douthwaite was the pick of the Glamorgan bowlers, finishing with the standout figures of the innings after taking the last two wickets in the space of three balls to end with 3 for 38.

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