Somerset kept alive their slim hopes of Royal London One-Day Cup quarter-final qualification with a convincing six-wicket victory over high-flying Yorkshire at Scarborough.
The Taunton side won only their second Group A match in six having bowled the Vikings out for just 175, with the hosts failing to recover enough from 7-3 and 97-8 in front of a crowd of 4,967.
Peter Trego led the way with 4-29 from 8.5 overs before opener Tom Abell anchored a chase which lasted 38.1 overs with his maiden List A fifty.
The 21-year-old hit 80 off 112 balls with 10 fours and shared 71 inside 16 overs for the fourth wicket with James Hildreth, who finished 23 not out.
Somerset must win their last two matches to have any chance of progression.
There were only two significant partnerships in the Yorkshire innings played out on a pitch with good pace and carry.
Top-scorer Jack Leaning, who made 40, and Will Rhodes (37) shared 70 for the fifth wicket to advance from 22-4 before teenagers Karl Carver and Matt Fisher shared 67 for the final wicket.
Before the match, Lees was awarded the captaincy in limited overs cricket on a full-time basis until the end of the season following Andrew Gale’s decision to resign from skippering in white ball cricket.
Afterwards Lees said: “We are gutted we’ve lost. The manner we’ve lost was disappointing. We have played some excellent one-day cricket of late.
“We are well aware as a team that we are going to lose games. It’s not always going to be your day, but we are going to back what we’ve done in one-day cricket so far and look forward to the next game.”
Essex inflicted a six-wicket defeat on Middlesex to move to within touching distance of a place in the quarter-finals of the Royal London One-Day Cup.
Replying to a total of 296-5 in the Group B contest at Colchester, Tom Westley and Ravi Bopara both completed half-centuries as the hosts reached their target with 17 balls left.
Only six overs were bowled at a soggy St Helen’s in Swansea before the rain wiped out Glamorgan’s Royal London One-Day Cup tie against Sussex.
The visitors opted to field first and it appeared to be a shrewd decision as Glamorgan openers Jacques Rudolph and Will Bragg crawled to 9-0 after six overs before the rain arrived.