Fourth seed Tomas Berdych of the Czech Republic booked his spot in the second round of the Rotterdam Open as the tournament got under way in the Netherlands on Monday.
The 31-year-old survived a testing 96 minute-encounter against unseeded Romanian Marius Copil, ultimately prevailing 7-6 (7-3), 6-4.
The first set did not feature a single break of serve, with Berdych only managing to carve out an advantage over the 130th ranked player in the ensuing tie-break.
The second set remained tightly contested, with Berdych finally clinching his first break and match point with Copil serving at 4-5.
Next up for Berdych is the winner of Tuesday's match betwen Viktor Troicki and Richard Gasquet, who is fresh from a finals loss to Alexander Zverev in Montpellier.
Also advancing on Monday was Russian Evgeny Donskoy, who beat Marcel Granollers-Pujol 6-4, 6-4, and Dutchman Robin Haase, who defeated Florian Mayer 7-5, 7-6 (7-3).
Frenchman Pierre-Hugues Herbert was another winner, 7-6 (7-5), 7-6 (7-5) over Feliciano Lopez.