ATP Auckland, New Zealand
Gael Monfils, 38, the oldest man to win a tour-level title since 1977 with Auckland triumph
The Frenchman closed out Zizou Bergs with a 6-3, 6-4 victory Saturday for his 13th career trophy.
The lucky loser will face wild card Adrian Mannarino, who defeated No. 11 seed Tommy Paul, in the second round.
After losing a match-winning tiebreak, Bergs was able to overcome Griekspoor in three sets for Belgium.
The 10-time event winner battled back to deny the qualifier, 4-6, 6-3, 6-4, in his opener Thursday.