British number one Dan Evans fell to a straight-set defeat by Stan Wawrinka in the first round of the Paris Masters.
A single break of serve was the difference in the opener before Wawrinka edged past the 30-year-old in the second set tie-break.
Wawrinka will play either Gilles Simon of France or America's Tommy Paul in the second round.
Top seed Rafael Nadal begins his campaign in Paris against Feliciano Lopez on Wednesday.