Both the finals in Stuttgart and 's-Hertogenbosch have been carried over to Monday because of rain.
At the Mercedes Cup, Philipp Kohslschreiber and Dominic Thiem are tied at 6-6, with Kohlschreiber leading 3-2 in the tie-break.
Thiem, the newest member of the world's top 10, is looking to follow up his semi-final victory over Roger Federer by winning his first title on grass.
The start of the match was delayed and it was the third rain break during the opening set that finally put paid to play for the day.
In Holland, defending champion Nicolas Mahut is one set away from his third title at the Ricoh Open in four years.
The Frenchman, who plays Andy Murray in the opening round of the Aegon Championships in London, had just won the first set 6-4 against Gilles Muller when rain intervened.
Source: PA
