Carlos Alcaraz started his Madrid Open title defence with a comfortable victory over Alexander Shevchenko.
World number three Alcaraz, 20, eased to a 6-2 6-1 win against Kazakhstan's Shevchenko.
The Wimbledon champion dominated throughout in a statement performance, with 23-year-old Shevchenko unable to match his pace and flair.
It was a welcome return to the clay for Spaniard Alcaraz after a right forearm injury caused him to withdraw from last week's Barcelona Open.
Alcaraz will face Brazil's Thiago Seyboth Wild in the third round.
Elsewhere in the men's draw, Britain's Jack Draper suffered a 6-1 7-5 defeat by Poland's Hubert Hurkacz.