Petra Kvitova cried after winning her first match since being stabbed during a burglary at her home in December.
The Czech, 27, looked impressive in beating American Julia Boserup 6-3 6-2 to reach round two of the French Open.
Kvitova suffered career-threatening injuries to her left hand in the attack in her home in Prague, but battled back to take her place in Paris.
The two-time Wimbledon champion said: "It's a pleasure to be here and I'm happy I made the decision to play."
The 15th seed won the opening point of the match with a cross-court forehand and only needed 74 minutes to overcome world number 86 Boserup.