Hampshire batsman James Vince will captain the England Lions in their 50-over series against South Africa A.
The 23-year-old scored 152 not out to secure a draw for England's second-string side in the unofficial second Test on Tuesday.
Vince will lead the Lions for all five matches of the one-day series, which gets under way on Sunday.
"It was a huge honour when our coach Mark Robinson asked me if I would lead the team," said Vince.
He led Hampshire's Twenty20 side last season, and is also Jimmy Adams' deputy in one-day and Championship cricket.
"I have played under some great captains both at Hampshire and with the Lions, and I really enjoyed the captaincy experience I gained at Hampshire last summer," he said.
"We have already seen from the four-day games that South Africa are tough opponents, and if anything their squad for the one-day series looks ever stronger. But we also have some new faces in our squad and it is a challenge we are all relishing."
Robinson added: "James had success captaining Hampshire last year in the T20 and we think giving him further exposure here will be beneficial to both the Lions as a team and James in the future."