Defending champion Carlos Alcaraz also got off to a winning start at the Madrid Open with a 6-2 6-1 win against Alexander Shevchenko.
Emma Raducanu blamed fatigue after suffering a straight-sets defeat to Argentinian qualifier Maria Lourdes Carle in the first round of the Madrid Open.
After missing the start of the clay court swing through injury, Carlos Alcaraz native has the Madrid Open pegged as the possible site of his return to competition.
Iga Swiatek arrives in Madrid celebrating her 100th week as the world No.1, a milestone only achieved by eight other women in tour history.
The Mutua Madrid Open revealed the names of the first four invitees to the WTA and ATP main draws: Simona Halep, Caroline Wozniacki, Kei Nishikori and MartÃn Landaluce.
World number one Iga Swiatek has no regrets about her performance after losing to rival Aryna Sabalenka in the Madrid Open final on Saturday.