serbian fifth seed ivanovic , the 2014 runner-up , was seen off 7-6 -lrb- 8/6 -rrb- 6-4 by france 's garcia , who had already beaten her two previous times this year .
other seeds made it through their first-round matches on tuesday in russian ekaterina makarova -lrb- 8/6 -rrb- 6-4 .
fifth seed ana ivanovic lost for the third time this year to france 's caroline garcia in stuttgart .