Kyle Edmund's French Open ended in the second round with a 6-4 6-4 6-4 defeat by John Isner.
The British number three battled hard against the big-serving 15th seed, but ultimately came up short.
Edmund had done very well to come through a physical contest with Georgian qualifier Nikoloz Basilashvili in the first round, but this was a big step up in class.
The 21-year-old showed that he could trouble the world's best with a blistering performance in the first two sets against David Goffin in the Davis Cup final last November before fading.
But facing the power of Isner was a different matter and one break in each set proved enough for the American.
Edmund had his chances, notably when he got to 0-40 in the sixth game of the second set, but Isner dug himself out of the hole and moves through to a third-round meeting with Teymuraz Gabashvili.