Captain Rob Key revealed his disappointment after the England Lions were comprehensively beaten by South Africa at Grace Road.
Herschelle Gibbs and Dale Steyn starred for the tourists as they warmed up for the upcoming one-day series against England with a four-wicket win in the Midlands.
Steyn took 3-27 on his return from injury, and Gibbs, dropped from the Test side, proved his class with a measured 81 as the tourists hunted down the meagre 184 target with 11.2 overs to spare.
With South Africa choosing to rest Greame Smith, Jacques Kallis and Mark Boucher and the Lions fielding six members of England's one-day squad, Key admitted his disappointment at the margin of the defeat.
"That was pretty much a drubbing really and that's not a true reflection of the two sides - I think we're a better side than that," he said.
"Whoever you're playing for, it's always disappointed to get beaten like that when you know you should have done better because you walk off the field thinking we mucked up today and it should have been a lot tighter than that.
"We're probably more used to that sort of pitch than those guys are. It was a little damp in the morning but even so we should have been a little bit smarter with bat and ball."
After winning the toss and electing to bat, Key top-scored for the Lions with 51 in a dismal showing which saw the hosts skittled out inside 47 overs.
"I don't think we were particularly smart today with the bat," Key admitted.
"We lost a poor toss and the conditions were fairly tough early on and it was a slow pitch but we let ourselves down.
"We should probably have got up to around 220 or 230 and we were probably not quite on it early on with the ball as well.
"Dale Steyn is a fantastic bowler and asked some good questions early on and we didn't do that enough and then Herschelle Gibbs showed us how to play a one-day innings."
Gibbs, caught off a no-ball on just 13, added: "I was lucky to get away with getting caught off a no ball so I thought it might be a good day for me.
"I've been playing for a while at Lashings and Glamorgan before that so I thought today that I'd take my time to get in and use it as a bit of preparation."
England's Lions face South Africa again at Derby on Saturday, when they will be led by Middlesex's Ed Joyce, before the tourists start the one-day series with a Twenty20 International against England at Chester-le-Street on August 20.